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The COVID-19 pandemic: catching up with the cataclysm.

ABSTRACT: Infection caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which belongs to the Coronaviridae family and is a positive-sense single-stranded RNA virus originating from Wuhan, China, was declared a global public health emergency on 11 March 2020. SARS-CoV-2 infection in humans is characterized by symptoms such as fever and dyspnea accompanied by infrequent incidence of lymphopenia, gastrointestinal complications such as elevated hepatic aminotransferases, and diarrhea. Originating in bats, the SARS-CoV-2 virus has been transmitted to humans likely via an intermediate host that is yet to be discovered. Owing to the absence of any vaccines or definite anti-viral drugs alongside the greater mobility of people across the globe, international and national efforts in containing and treating SARS-CoV-2 infection are experiencing severe difficulties. In this review, we have provided a picture of SARS-CoV-2 epidemiological characteristics, the clinical symptoms experienced by patients of varying age groups, the molecular virology of SARS-CoV-2, and the treatment regimens currently employed for fighting SARS-CoV-2 infection as well as their outcomes.

SUBMITTER: Chakraborty S

PROVIDER: S-EPMC7312284 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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The COVID-19 pandemic: catching up with the cataclysm.

Chakraborty Surajit S Basu Anirban A

F1000Research 20200623

Infection caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which belongs to the Coronaviridae family and is a positive-sense single-stranded RNA virus originating from Wuhan, China, was declared a global public health emergency on 11 March 2020. SARS-CoV-2 infection in humans is characterized by symptoms such as fever and dyspnea accompanied by infrequent incidence of lymphopenia, gastrointestinal complications such as elevated hepatic aminotransferases, and diarrhea. Orig ...[more]

PMID: 32595947

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Project description:Background After the initial outbreak in China (December 2019), the World Health Organization declared COVID-19 a pandemic on March 11th, 2020. This paper aims to describe the first 2 years of the pandemic in Mexico. Design and methods This is a population-based longitudinal study. We analyzed data from the national COVID-19 registry to describe the evolution of the pandemic in terms of the number of confirmed cases, hospitalizations, deaths and reported symptoms in relation to health policies and circulating variants. We also carried out logistic regression to investigate the major risk factors for disease severity. Results From March 2020 to March 2022, the coronavirus disease 2019 (COVID-19) pandemic in Mexico underwent four epidemic waves. Out of 5,702,143 confirmed cases, 680,063 were hospitalized (11.9%), and 324,436 (5.7%) died. Even if there was no difference in susceptibility by gender, males had a higher risk of death (CFP: 7.3 vs. 4.2%) and hospital admission risk (HP: 14.4 vs. 9.5%). Severity increased with age. With respect to younger ages (0–17 years), the 60+ years or older group reached adjusted odds ratios of 9.63 in the case of admission and 53.05 (95% CI: 27.94–118.62) in the case of death. The presence of any comorbidity more than doubled the odds ratio, with hypertension-diabetes as the riskiest combination. While the wave peaks increased over time, the odds ratios for developing severe disease (waves 2, 3, and 4 to wave 1) decreased to 0.15 (95% CI: 0.12–0.18) in the fourth wave. Conclusion The health policy promoted by the Mexican government decreased hospitalizations and deaths, particularly among older adults with the highest risk of admission and death. Comorbidities augment the risk of developing severe illness, which is shown to rise by double in the Mexican population, particularly for those reported with hypertension-diabetes. Factors such as the decrease in the severity of the SARS-CoV2 variants, changes in symptomatology, and advances in the management of patients, vaccination, and treatments influenced the decrease in mortality and hospitalizations.

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The COVID-19 pandemic: catching up with the cataclysm.

Publications

The COVID-19 pandemic: catching up with the cataclysm.

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