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IJCRR - 2nd Wave of COVID-19: Role of Social Awareness, Health and Technology Sector, June, 2021

Pages: 166-172

Date of Publication: 11-Jun-2021

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COVID-19 Vaccine - Public Sentiment Analysis Using Python's Textblob Approach

Author: P. Sivalakshmi, P. Udhaya Kumar, M. Vasanth, R. Srinath, M. Yokesh

Category: Healthcare

Abstract:Background: In the present scenario, weeks over social media creates a high impact on the verdict of individuals& organizations. Opinions in the form of tweets reflect one's attitude and emotions towards a specific person or an event. Also, Companies can benefit from this massive platform by collecting data related to opinions on them. Objective: To infer the public opinion towards the tag Covid-19 Vaccine. Which is one of the natural language processing. Methods: The TextBlob approach is used to extract emotions and visualize them from the raw data collected from Twitter. Initially, tweets were collected on Covid -19 Vaccine after preprocessing the collected data set, the TextBlob approach classifies polarity of textual data in positive, strongly positive, weakly positive, neutral, negative, strongly negative & weakly negative categories. Results: The sentiment scores for collected tweets is calculated and shown under the results section. Which projects the emotions of all the people using social media towards covid-19 vaccination. Conclusion: There are surplus opportunities in future for exploring trend sentiments over some time. Also analysis over the different location of the world. Based on which necessary measures could be taken by the government or any organizations to create positivity among the public.

Keywords: Emotion analysis, Natural Language Processing, Social media, TexBlob

Full Text:


People started sharing different varieties of emotions very first in the year 1970.1,2 Thereafter, people started analyzing that information in bits and pieces, has various application in turns like predicting the election results, realizing the society’s attitudes towards an event or a specific person. It has been shown that how social media expresses collective wisdom which, when properly used, can yield and accurate predictions over any issues.3 Meanwhile, the advent of technologies these obtained more popularity due to their high accessibility.1 Now a days, people use social media sites to share opinion. Twitter is one such platform in which users send, read post known as tweets and interact with different community people. Users exchange their opinion on daily lives, brands and places. Sentiment analysis, which is called opinion mining, is a field of study that analyses the opinions, evaluations, attitudes, and feelings of individuals according to entities such as products, services, organizations, individuals, events, issues, and their characteristics.4 Beliefs are important almost in every human activity. At present, any small scale or large scale businesses and organizations want to find out consumer’s viewpoints of their products and services. On the ballot, voters want to know other’s opinions about the candidates before they vote. In the past, individuals used to ask their family and friends about their viewpoints. Small & large scale businesses and organizations used to post a questionnaire when they want to know about the individual’s opinion.4Business marketing, public relations, and political advertising companies for a long time with an increase in usage of the social networks, individuals and organizations increasingly use the content on these networks and make decisions.4 The EAS system had been designed to extract emotions in social network data. To check the performance of the designed system, the data of Twitter gathered in the range of the Iran presidential election in 2017.5,6 Amongst the earlier social networks studies, we chose Twitter because of its importance.7 For fetching tweets data from Twitter. Initially, an API request was made to Twitter which was later approved. Afterwards, as explained by Shah et al. python’s tweepy library which is specifically developed for retrieving tweets data from Twitter is used along with Twitter streaming API and authentication keys (Consumer key, consumer token key, access token and access token secret.) provided by twitter.8,9 For authentication purpose, the Tweepy library used the AuthHandler function for verification of authentication keys. Once, the authentication request is approved it starts fetching the tweets. Then panda’s library was used to fetch all the collected tweets in a data frame. Next, pre-processing of a tweet using a regular expression library performed through which unnecessary data removed from tweets. In the last stage of pre-processing the textual data changed into numerical form named count vectorization. It is a type of encoding that helps in performing tokenization. Which involves crucial steps performed as a part of natural language processing (NLP). Through which sentences were tokenized into tokens of each word to form a feature set. Once the dataset pre-processed, in the next stage sentiment scores were calculated using Python’s TextBlob Library, the same discussed in detail in further sections.


A system designed for real-time visualization of Twitter microblogs and their analysis. For offering enhanced semantic insights, a weighted tag network has been designed.8 There is a system to find semantic patterns through heterogeneous data and without any social network structure like Instagram to detect events.9 Not only Instagram users’ posts, but also the combination of Instagram and Twitter users’ posts employed to improve event detection quality.10 The numbers of four comment categories of Trump and Clinton, supporters and opponents have been studied.11 Usually classification accomplished by hashtags. The study made one day earlier U.S Presidential ballot demonstrated that Clinton’s supporters were more than trump. Since 60% of Instagram users were in the age between 18 and 35, their prediction was different from the real results. This shows clearly the inability to predict the result of Instagram to the whole society. Mohamed studied the Malaysian politician's storytelling.11,12 In this, all the post of politicians, including video, picture, and text content, have been analyzed. The post is divided into six categories, and the results are compared to each other. Recently, it has been shown the high correlation between different Indonesian party influencers and their presidential candidates on Twitter.13 Emotion analysis using text processing techniques also applied on the social network in, city event detection using expandable in initial event keywords has been studied.14-16 In this study, it found that Twitter is much better than Instagram in analyzing & predicting city events.17

Sentiment Classification Using Natural Language Processing (NLP)

As articulated by Lobur, natural language processing (NLP) is the domain in machine learning which is used in analytics.18 NLTK which is called the Natural language toolkit is a   part of python’s library belonging to natural language processing. Natural language processing not only deals with text analytics but also plays an important part with research based on analysis of human languages. Preparing models for research based on human languages comes in computational linguistics. The major advantage of using NLTK is that it allows even a beginner programmer to understand concepts of natural language processing saving a lot of time from gathering information about it. Numerous advantage associated with using NLTK is it contains 60 corpora belonging to real-world data, collections of grammar, models which have been trained, functions which provide a path for performing general natural language processing tasks. The corpora used in the Natural language toolkit (NLTK) are generally divided into different categories for assisting its users. Though in other programming languages, natural language processing task can be accomplished. The major points which take python apart from other languages is a follows:

  • Better reading ability.

  • User-friendly object-oriented technique.

  • Ease of extensibility.

  • Better Unicode assistance.

  • A functionality-rich library.

NLTK has a vast source of libraries that are being updated with new functionalities over the period. This paper has provided a deep understanding of the functioning of the NLTK library. Tasks such as summarization of text, extraction of information, machine translation are performed by Natural Language Process as depicted in work from Zitnik.20 here, the author has carried out sentiment analysis using natural language processing toolkit to detect the language of the text and extract meaning out of it. For it, first, the language dataset has been cleaned in the pre-processing stage which was then followed by language detection and evaluation of the result. Though, this natural language toolkit library. The major limitation of this work is that it does not compares the performance of this library with other natural language toolkit libraries. Though, as an advantage, this library can be used for natural language processing courses for educational purposes. Moreover, this work has provided an understanding of the use of natural language processing in language detection which is used in this research article.

Feature Extraction for Sentiment Classification

As stated by Zhang, Jin and Zhon in their work that one of the most important models utilized for the categorization of the object is Bag of Words (BoW).21 The concept behind the Bow model is forming visual words by quantizing every extracted key point. After this, each picture is shown using visual words histogram. Joachims also worked upon the BoW model.23 He showed that the BoW model depicts the count of every word present in textual data. Ma et al.24 showed that a matrix depicting the count of words in textual data is created in the BoW model. Afterwards, the frequency of occurrence of these words is used as features to train the classifier. Thang Luong conducted a research where it is observed that the BoW model performed considerably well in compassion with other models on Chinese English language translation data.22 All these works have helped in understanding the concept behind BoW Model for feature extraction. Janani, emphasized various steps being taken while preprocessing the dataset.23 Various steps which were taken for the pre-processing dataset are stopped words removal, determination of sentence boundary, tokenization and stemming. Tokenization is one of the most important steps while pre-processing a dataset. It works in a manner that textual data is divided into small tokens. Each token represents a word from the textual document or language.

There are numerous libraries available in python such as NLTK word tokenize, Mila tokenizer, TextBlob tokenizer etc. which are used for tokenization. This work has helped in understanding the in-depth functioning of the Text Blob library for pre-processing phase.

TextBlob Approach Algorithm for Sentiment Classification

One of python’s libraries that use API for accessing methods to perform Natural language processing is called as TextBlob. A common challenge for work based on sentiment analysis is missing spelt words. This problem is addressed by Manushree, Adarsh and Kumar here, authors have compared TextBlob and SentiWordNet approach. Firstly, the dataset was pre-processed by removing stop words and unrequired data which could result in added computational cost in the performance of models.24,25 It was followed by aspect selection and based on it sentence extraction was done. Both the models were then used to calculate sentiment polarity and categorize the reviews into positive, negative and neutral categories. This work just focused on sentiment analysis of miss spelt words in the English language. The advantage of this work was that it performed sentiment analysis on miss spelt words in the English language. However, the limitation of this work is that it was unable to perform sentiment analysis on miss spelt words in other language using TextBlob.

Moreover, this work has helped in-depth understanding regarding the implementation of the TextBlob approach for the research project. The pre-processing of the textual data is of very importance in sentiment analysis as it reduces the size of textual data which is given as input to the model. Various steps are followed while pre-processing the textual data. The various pre-processing tasks performed for cleaning textual data are the determination of boundary of sentences, removal of stop words from natural language, stemming and tokenization. Tokenization involves splitting a sentence into tokens of each word belonging to the respective sentences. Janani et al.25 carried out work on certain tokenize and read the tokenized words. The advantage of this work is that it compared various good tokenization tools and it distinguished TextBlob from them. However, it was unable to read tokenized special characters which turned out as its limitation. This work has helped in understanding the major limitation of TextBlob.26

Python’s Regular Expression (REGEX/RE) Library

Stolee, concentrated mainly on regex, which is also called a regular expression, is a reflection of specific words search which helps in the identification of text through recognition of patterns in place of exact strings. REGEX library is commonly utilized for parsing textual data belong to general language. Regex is also called Python’s module. Even though regex is considered a versatile and powerful library it could be difficult to understand, this is one of its limitations. According to Spishak, Dietl and Ernst, The major advantage of python’s regular expression library is that it has a variety of applications as it has a powerful ability to fetch meaningful information from the given sentence.27 Regular expression is applicable in per-processing the data, MY QL injection, generation of test cases and intrusion detection in networks etc. According to Ganesh and Yeole, the major advantage of a regular expression library is that it has fast processing speed in terms of code execution, and it has very compressed code which reduces efforts of writing long codes for pre-processing of the dataset.28,29 Advantage fast processing and compresses coding.


Step: 1 Setup of Twitter Application Programming Interface

To utilize Twitter API, we first need a Twitter Developer Application Page, to create a Developer account. After the application is approved, head to Developer Dashboard, Click on ‘Projects & Apps’ -> ‘Overview’(in that section) click the ‘New Project’ button to create a new project.30 Then again return to overview click on the Key icon to access the Keys and Tokens of the new project, upon clicking generate /regenerate we will have API Key, API Secret, Access Token & Access Token Secret to be popup, saved them for later use (Figure 1-4)

Step:2 Extracting & Pre-processing Tweets

Install and Import Libraries Before analysis, you need to install TextBlob and tweepy libraries using! Pip install command. Using the accessing credentials-4 codes generated earlier, we can set up the Twitter API authentication.

api_key = 'your_api_key_here'

api_key_secret = 'your_api_key_secret_here'

access_token = 'your_access_token_here'

access_token_secret = 'your_access_token_secret_here'

auth = tweepy.OAuthHandler(api_key, api_key_secret)

auth.set_access_token(access_token, access_token_secret)

api = tweepy.API(auth)

Step 3: Tweets Extraction

Key Considerations:

  1. Rate limit of 900 API calls every 15 minutes

  2. Twitter allows tweet extraction of the past 7 days alone. So need to extract each day for the record of the last 7 days.

  3. The search term should be COVID -19 Covid vaccine.

  4. Excluded retweets &tweets other than English.

from tweepy import

import pandas as pd

import csv

import re

import string

import preprocessor as p

 consumer_key =

consumer_secret =


access_secret =

auth=tweepy.OAuthHandler(consumer_key, consumer_secret)

auth.set_access_token(access_key, access_secret)

 api = tweepy.API(auth,wait_on_rate_limit=True)

 csvFile = open('file-name', 'a')

csvWriter = csv.writer(csvFile)

 search_words = "#"      # enter your words

new_search = search_words + " -filter:retweets"

for tweet in tweepy.Cursor(,q=new_search,count=100,



csvWriter.writerow([tweet.created_at, tweet.text.encode('utf-8'),tweet.user.screen_name.encode('utf-8'), tweet.user.location.encode('utf-8')])

The output of the above code is a csv file.

Step 4: Tweet Pre-Processing

import preprocessor as p

# Clean tweet text with tweet-preprocessor

tweets_df['text_cleaned'] = tweets_df['text'].apply(lambda x: p.clean(x))

By using this tweet preprocessor, we can remove URL’s, Hashtag, Emoji’s, reserved words and mentions in the tweets.

Step 5: Sentiment Analysis Using TextBlob

from textblob import TextBlob

# Obtain polarity scores generated by TextBlob

tweets_df['textblob_score'] = tweets_df['text_cleaned'].apply(lambda x: TextBlob(x).sentiment.polarity)

# Set threshold to define neutral sentiment

neutral_thresh = 0.05

# Convert polarity score into sentiment categories

tweets_df['textblob_sentiment'] = tweets_df['textblob_score'].apply(lambda c: 'Positive' if c >= neutral_thresh else ('Negative' if c <= -(neutral_thresh) else 'Neutral'))

Step 6:Visualize Your Results.

Using Pie-Chart will have the output of the analyzed tweets.


Results on Covid-19 Vaccine (20 tweets)

The below mentioned figure represents the reaction of people towards the vaccination campaign for Covid 19, the initial analysis takes into account the analysis results from 20 tweet reaction, as observed it’s clear that around 13 tweets i.e. around 65% of the people reacted neutral indicated by the yellow portion of the pie chart, followed by 4 people accounting to 20% of the total had weakly positive mindset indicating that they were in an confusion to either to be on the positive side or to have neutral opinion indicated by the light green portion of the pie chart and also it can be observed that around 10% of the people reacted positively and another feeble percentage of people accounting to 5% of the total tweet had a weakly positive opinion. The overall results are deliberately indicating that majority of the opinions were on the neutral side. These results were obtained with total runtime of around 12sec (Figure 5).

Covid-19 Vaccine Results for 500 Tweets

Widening the survey range to 500, the results followed up have been indicated in the below pie chart, still results indicated a neutral opinion from most of the people accounting to 56.80% of the survey count, followed up by around 22.60% having a weakly positive opinion, these people accounted the majority of total survey count. The positive tweets arose from around 9.40% of the people. The rest of the opinions accounted for only a minimal lest off a percentage of the total survey count. These results were obtained with total runtime of around 28 sec (Figure 6).

Covid-19 Vaccine Results for 1000 Tweets

The final survey results were taken accounting for the opinion that arose from a total of 1000 tweets, which were no different from the former results, and had the neutral reaction from most the people accounting for 54.20% of the total survey count, followed by weakly positive opinion from 23.40% of the people, followed by positive, weakly negative, strongly positive and negative accounting to the most feeble amount of the total. These results were obtained with total runtime of around 52 sec (Figure 7).

Investigated Result of 1000 Tweets

Since all the above analysis shows not much of change in neutral polarity. We had an idea of analyzing with another tag of words to ensure the working of the Programme in all polarities. Another most commented sector is food, from reviews to opinions, the following pie chart represents the results we got from surveying around 1000  tweets related to the opinion of the people reacting to the McDonalds chicken, the results conveyed the follows, mostly there was an equal distribution of people liking and disliking to the tasty of the particular recipe, the pie chart indicated a majority of the distribution of people reacted with the weakly negative and strongly negative opinion that accounted to around 62% of the total survey count, the negative reactions included up to 18.40%, followed up by weakly positive people accounting to 13.60% and rest of the feeble count being distributed among positive and strongly positive. The pie chart strongly indicates that there was a negative opinion by most of the people showing an unwillingness to the recipe. These results were obtained with a total runtime of around 50 sec (Figure 8).

Similar to the previous one, KFC being a rival to McDonald’s for several decades, we tested for KFC to compare both the results for 1000 tweets. These results though showed a surge of opinion towards positive, thereby account for around 30.80% of the whole survey count, all though there were equally negative opinions. These results were obtained with total runtime of around 55 sec (Figure 9).

Comparison of Two previous Outputs

By comparing the above previous results we can observe that one is better than the other based on people’s opinion. Similarly, we can compare various aspects using this algorithm. Thereby ensuring the change in neutral polarity. So basically we can conclude that around 35% of people are feeling positive, around 10% of people feeling negative & around 54% of people having neutral emotion on Covid-19 Vaccine. Through the investigated result, we can conclude that more than 60% of people have negative opinion or sentiment on KFC & around 80% of people using this social platform has negative emotion/opinion or sentiment on McDonald’s. Strong positive emotions were found less than 1% reflecting the health consciousness of the public.


In this article, we have analyzed Covid-19 Covid vaccine tweets via Twitter API and implemented them using TextBlob. Likewise, there are surplus opportunities in future for exploring trend sentiments over some time. Also analysis over the different location of the world. Based on which necessary measures could be taken by the government or any organizations to create positivity among the public.

DECLARATION OF INTEREST: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.


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A Study by Tarek Elwakil et al. entitled "Led Light Photobiomodulation Effect on Wound Healing Combined with Phenytoin in Mice Model" is awarded Best Article of Vol 13 issue 02
A Study by Mohita Ray et al. entitled "Accuracy of Intra-Operative Frozen Section Consultation of Gastrointestinal Biopsy Samples in Correlation with the Final Histopathological Diagnosis" is awarded Best Article for Vol 13 issue 01
A Study by Badritdinova MN et al. entitled "Peculiarities of a Pain in Patients with Ischemic Heart Disease in the Presence of Individual Combines of the Metabolic Syndrome" is awarded Best Article for Vol 12 issue 24
A Study by Sindhu Priya E S et al. entitled "Neuroprotective activity of Pyrazolone Derivatives Against Paraquat-induced Oxidative Stress and Locomotor Impairment in Drosophila melanogaster" is awarded Best Article for Vol 12 issue 23
A Study by Habiba Suhail et al. entitled "Effect of Majoon Murmakki in Dysmenorrhoea (Usre Tams): A Standard Controlled Clinical Study" is awarded Best Article for Vol 12 issue 22
A Study by Ghaffar UB et al. entitled "Correlation between Height and Foot Length in Saudi Population in Majmaah, Saudi Arabia" is awarded Best Article for Vol 12 issue 21
A Study by situs slot and Siti Sarah Binti Maidin entitled "Sleep Well: Mobile Application to Address Sleeping Problems" is awarded Best Article for Vol 12 issue 20
A Study by Avijit Singh et al. situs slot "Comparison of Post Operative Clinical Outcomes Between “Made in India” TTK Chitra Mechanical Heart Valve Versus St Jude Mechanical Heart Valve in Valve Replacement Surgery" is awarded Best Article for Vol 12 issue 19
A Study by Sonali Banerjee and Mary Mathews N. entitled "Exploring Quality of Life and Perceived Experiences Among Couples Undergoing Fertility Treatment in Western India: A Mixed Methodology" is awarded Best Article for Vol 12 issue 18
A Study by Jabbar Desai et al. entitled "Prevalence of Obstructive Airway Disease in Patients with Ischemic Heart Disease and Hypertension" is awarded Best Article for Vol 12 issue 17
A Study by Juna Byun et al. entitled "Study on Difference in Coronavirus-19 Related Anxiety between Face-to-face and Non-face-to-face Classes among University Students in South Korea" is awarded Best Article for Vol 12 issue 16
A Study by Sudha Ramachandra & Vinay Chavan entitled "Enhanced-Hybrid-Age Layered Population Structure (E-Hybrid-ALPS): A Genetic Algorithm with Adaptive Crossover for Molecular Docking Studies of Drug Discovery Process" is awarded Best article for Vol 12 issue 15
A Study by Varsha M. Shindhe et al. entitled "A Study on Effect of Smokeless Tobacco on Pulmonary Function Tests in Class IV Workers of USM-KLE (Universiti Sains Malaysia-Karnataka Lingayat Education Society) International Medical Programme, Belagavi" is awarded Best article of Vol 12 issue 14, July 2020
A study by Amruta Choudhary et al. entitled "Family Planning Knowledge, Attitude and Practice Among Women of Reproductive Age from Rural Area of Central India" is awarded Best Article for special issue "Modern Therapeutics Applications"
A study by Raunak Das entitled "Study of Cardiovascular Dysfunctions in Interstitial Lung Diseas epatients by Correlating the Levels of Serum NT PRO BNP and Microalbuminuria (Biomarkers of Cardiovascular Dysfunction) with Echocardiographic, Bronchoscopic and HighResolution Computed Tomography Findings of These ILD Patients" is awarded Best Article of Vol 12 issue 13 
A Study by Kannamani Ramasamy et al. entitled "COVID-19 Situation at Chennai City – Forecasting for the Better Pandemic Management" is awarded best article for  Vol 12 issue 12
A Study by Muhammet Lutfi SELCUK and Fatma situs slot entitled "Distinction of Gray and White Matter for Some Histological Staining Methods in New Zealand Rabbit's Brain" is awarded best article for  Vol 12 issue 11
A Study by Anamul Haq et al. entitled "Etiology of Abnormal Uterine Bleeding in Adolescents – Emphasis Upon Polycystic Ovarian Syndrome" is awarded best article for  Vol 12 issue 10
A Study by situs slot et al entitled "Estimation of Reference Interval of Serum Progesterone During Three Trimesters of Normal Pregnancy in a Tertiary Care Hospital of Kolkata" is awarded best article for  Vol 12 issue 09
A Study by Ilona Gracie De Souza & Pavan Kumar G. entitled "Effect of Releasing Myofascial Chain in Patients with Patellofemoral Pain Syndrome - A Randomized Clinical Trial" is awarded best article for  Vol 12 issue 08
A Study by Virendra Atam et. al. entitled "Clinical Profile and Short - Term Mortality Predictors in Acute Stroke with Emphasis on Stress Hyperglycemia and THRIVE Score : An Observational Study" is awarded best article for  Vol 12 issue 07
A Study by K. Krupashree et. al. entitled "Protective Effects of Picrorhizakurroa Against Fumonisin B1 Induced Hepatotoxicity in Mice" is awarded best article for issue Vol 10 issue 20
A study by Mithun K.P. et al "Larvicidal Activity of Crude Solanum Nigrum Leaf and Berries Extract Against Dengue Vector-Aedesaegypti" is awarded Best Article for Vol 10 issue 14 of IJCRR
A study by Asha Menon "Women in Child Care and Early Education: Truly Nontraditional Work" is awarded Best Article for Vol 10 issue 13
A study by Deep J. M. "Prevalence of Molar-Incisor Hypomineralization in 7-13 Years Old Children of Biratnagar, Nepal: A Cross Sectional Study" is awarded Best Article for Vol 10 issue 11 of IJCRR
A review by Chitra et al to analyse relation between Obesity and Type 2 diabetes is awarded 'Best Article' for Vol 10 issue 10 by IJCRR. 
A study by Karanpreet et al "Pregnancy Induced Hypertension: A Study on Its Multisystem Involvement" is given Best Paper Award for Vol 10 issue 09
Late to bed everyday? You may die early, get depression situs slot
Egg a day tied to lower risk of heart disease situs slot
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List of Awardees

A Study by Ese Anibor et al. "Evaluation of Temporomandibular Joint Disorders Among Delta State University Students in Abraka, Nigeria" from Vol 13 issue 16 received Emerging Researcher Award

A Study by Alkhansa Mahmoud et al. entitled "mRNA Expression of Somatostatin Receptors (1-5) in MCF7 and MDA-MB231 Breast Cancer Cells" from Vol 13 issue 06 received Emerging Researcher Award

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International Journal of Current Research and Review (IJCRR) provides platform for researchers to publish and discuss their original research and review work. IJCRR can not be held responsible for views, opinions and written statements of researchers published in this journal


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