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Twitter is gaining popularity as a microblogging and social networking service to discuss various social issues. Coronavirus disease 2019 (COVID-19) has become a global pandemic and is discussed worldwide. Social media is an instant platform to deliberate various dimensions of COVID-19. The purpose of the study is to explore and analyze the public sentiments related to COVID-19 vaccines across the Twitter messages (positive, neutral, and negative) and the impact tweets make across digital social circles.

To fetch the vaccine-related posts, a manual examination of randomly selected 500 tweets was carried out to identify the popular hashtags relevant to the vaccine conversation. It was found that the hashtags “covid19vaccine” and “coronavirusvaccine” were the two popular hashtags used to discuss the communications related to COVID-19 vaccines. 23,575 global tweets available in public domain were retrieved through “Twitter Application Programming Interface” (API), using “Orange Software”, an open-source machine learning, data visualization and data mining toolkit. The study was confined to the tweets posted in English language only. The default data cleaning and preprocessing techniques available in the “Orange Software” were applied to the dataset, which include “transformation”, “tokenization” and “filtering”. The “Valence Aware Dictionary for sEntiment Reasoning” (VADER) tool was used for classification of tweets to determine the tweet sentiments (positive, neutral and negative) as well as the degree of sentiments (compound score also known as sentiment score). To assess the influence/impact of tweets account wise (verified and unverified) and sentiment wise (positive, neutral, and negative), the retweets and likes, which offer a sort of reward or acknowledgment of tweets, were used.

A gradual decline in the number of tweets over the time is observed. Majority (11,205; 47.52%) of tweets express positive sentiments, followed by neutral (7,948; 33.71%) and negative sentiments (4,422; 18.75%), respectively. The study also signifies a substantial difference between the impact of tweets tweeted by verified and unverified users. The tweets related to verified users have a higher impact both in terms of retweets (65.91%) and likes (84.62%) compared to the tweets tweeted by unverified users. Tweets expressing positive sentiments have the highest impact both in terms of likes (mean = 10.48) and retweets (mean = 3.07) compared to those that express neutral or negative sentiments.

The main limitation of the study is that the sentiments of the people expressed over one single social platform, that is, Twitter have been studied which cannot generalize the global public perceptions. There can be a variation in the results when the datasets from other social media platforms will be studied.

The study will help to know the people's sentiments and beliefs toward the COVID-19 vaccines. Sentiments that people hold about the COVID-19 vaccines are studied, which will help health policymakers understand the polarity (positive, negative, and neutral) of the tweets and thus see the public reaction and reflect the types of information people are exposed to about vaccines. The study can aid the health sectors to intensify positive messages and eliminate negative messages for an enhanced vaccination uptake. The research can also help design more operative vaccine-advocating communication by customizing messages using the obtained knowledge from the sentiments and opinions about the vaccines.

The paper focuses on an essential aspect of COVID-19 vaccines and how people express themselves (positively, neutrally and negatively) on Twitter.

The purpose of this paper is to address the problems associated with informatics and analytics projects that are developed in an “organic” manner. As such, this often circumvents formal project management principles and practices. The decision to do this is determined by organizational factors; however, even in an informal environment, ensuring that adequate disaster recovery and business continuity plans are in place for all mission-critical applications is vital to ensure the long-term survival prospects of an organization in the event of a disaster.

By adapting the principles and techniques of traditional disaster recovery and business continuity planning, an informatician can develop plans that integrate the requirements of their projects into a larger, organization-wide plan to recover from incidents and ensure continuity of business operations.

The use of disaster recovery planning and business continuity planning can help ensure the long-term viability of informatics and analytics projects within an organization.

Most business continuity planning is focused on projects that are formally developed and relatively large in scale. This paper applies these principles and practices to informatics and analytics projects that are developed informally and managed casually. Thorough an example, the point that more traditional disaster recovery and continuity practices can and should be applied in this less-formal environment is demonstrated.

When catastrophic disasters recently occurred, digital volunteer networks formed by the public emerged across the globe. They aggregated, analyzed and visualized disaster data. Those volunteer networks sometimes shared their data with formal response organizations. Such data sharing and integration increased the capacity of formal response organizations for dealing with disasters. However, despite the emergence and contributions of digital volunteer networks, the literature has been focused primarily on the role of formal response organizations such as emergency management agencies and the Red Cross. The purpose of this paper is to describe how technical and organizational factors influence collaboration between digital volunteer networks and formal response organizations.

This research employs a case study method, focusing on the 2015 Nepal earthquake.

This study found that information technology and a shared understanding of disaster situations and how to address disasters are key determinants of collaboration between digital volunteer networks and formal response organizations.

This research is expected to contribute to building an integrated emergency response system in the information age.

This study aims to investigate barriers and enablers of social media usage by zooming on one specific type of domain: disaster management. First, by systematically reviewing previous studies using a typology to social media usage, this study identifies the challenges often faced. Second, the results are visualized by qualitatively analyzing the focus group discussion data.

This paper opted for an inductive thematic approach of grounded theory, including focus group discussion with ten participants from diverse backgrounds working in the disaster domain. The data is transcribed verbatim and coded using Atlas.ti software.

The findings suggest that the vogue of social media significantly ascends its usage in disaster management. Regulatory, software, physical, authenticity, cultural and demographic rose as challenges for social media usage in disaster management. Findings further indicate enablers as the rise in mobile penetration, democratic participation, increase in living standards, two-way real-time communication, global reach, expeditious decision-making, no space-time constraint and cheaper source of information. Social media, compared to traditional media, is explored. This study has practical implications in helping authorities understand the barriers and enablers for social media usage in disaster management.

Qualitative data analysis of social media usage for disaster management has received scant attention. The main takeaway of this research is to offer clear findings of the purview of social media usage for disaster management. It demonstrates the challenges and enablers of disaster management using social media in the Indian context. Results indicate that leveraging social media for disaster management can extend decision-making for effective disaster management.

Nepal's urban population is estimated to be around 15 percent. This is a tremendous increment considering that the urban population some 50 years back was just around 3 percent. The rapid increase in urban population in the last five decades has resulted in unplanned and haphazard urban growth. Urbanization causes a shift in employment, from the agricultural sector to the nonagricultural sector. However, in Nepal, despite the increase in the urban population, the economy is still largely dictated by the agricultural sector. Urbanization is creating and adding new risks to the existing risks from natural hazards such as earthquakes, landslides, and flooding. Building a culture of safety is the key to building resilience of communities to disasters and the involvement of the community in managing risks is instrumental in reducing the adverse impacts of these disasters. Public awareness in dealing with disasters and in responding to emergency situations can save a great number of lives.

The aim of this study is to investigate people's information practices as the SARS-CoV-2 virus took hold in the UK. Of particular interest is how people transition into newly created pandemic information environments and the ways information literacy practices come into view.

The qualitative research design comprised one-to-one in-depth interviews conducted virtually towards the end of the UK's first lockdown phase in May–July 2020. Data were coded and analysed by the researchers using constant comparative and situated analysis techniques.

Transition into new pandemic information environments was shaped by an unfolding phase, an intensification phase and a stable phase. Information literacy emerged as a form of safeguarding as participants engaged in information activities designed to mitigate health, legal, financial and well-being risks produced by the pandemic.

Time constraints meant that the sample from the first phase of this study skewed female.

Findings establish foundational knowledge for public health and information professionals tasked with shaping public communication during times of crisis.

This paper contributes to understandings of the role that information and information literacy play within global and long-term crises.

This is one of the first studies to explore information practices during the COVID-19 pandemic.