Our research objective is to assess the contagion effect on Japanese firms and to evaluate the Japanese government's COVID-19 measures during the period from April 7, 2020, to May 25, 2020. We propose a susceptible-infected-recovered-dead model for COVID-19 and derive COVID-19 parameters ...
Article27 September 2023 1Introduction The current coronavirus pandemic (COVID-19), caused by the highly contagious SARS-CoV-2 virus, is a devastating disease. Since its release from China’s Wuhan City in December 2019, it has had unprecedented consequences that are causing massive crises all o...
To obtain the frequency of jumps, we use the full sample ranging from 2013 through the end of 2023 to estimate the coefficients of the ARJI model. Then we infer the series of dynamic jump intensities and focus on the period of interest from 2018 to 2023. Considering data balance, we desig...
Influenza viruses are RNA viruses belonging to the family Orthomyxoviridae that cause a highly contagious respiratory disease in humans. Both influenza A and B viruses can cause epidemics, with influenza A/H3N2 and B/Victoria being the main strains responsible for current influenza epidemics [19]. ...
(2014)reported on how the public perceived the risk of contracting the SARS virus when traveling on themetro system. The study has relevance to the current COVID-19 pandemic, which is even more contagious than SARS. This could a reason for a significant reduction in public transportation trips...
that the ratios have changed in recent months. The study did run through June 30, however, when the Delta wave was about to break, and it did not find that the proportion of patients with moderate to severe respiratory distress was trending upward at the end of the observation period. ...
How long are you contagious with COVID? People seem to pass on the virus most often about two days before symptoms show up and during the early stages of their illness. If your symptoms are serious, you may be infectious for a longer period ...
"For close contacts, or those who have stayed within the same enclosed space as a confirmed case, our guidelines set forth an increased infection period, from two days before symptoms begin to four days, to better curb the spread," explained Kang. While on infection...
Indeed, it is a current and crucial priority to develop an effective and timely vaccine administration campaign towards this highly contagious disease [7]. For that reason, differently, from the current application of ML and AI for COVID-19 [6], we aim to answer this still unresolved and ...
2021a, b) can spread contagiously from cities under the strictest containment policy to cities with less strict or no containment policy, even if these cities do not share borders. Third, we emphasize sustainable development, especially the greater resilience of online MSMEs. On the intensive ...