Coronavirus (COVID-19) Collection
- SARS-CoV-2 variants of concern (VOC) appear to spread more easily. Other emerging variants are also gaining attention, either known as a "variants of interest" (VOI) or "variants under investigation" (VUI), which increase transmission, warranting further studies. Since the onset of the COVID-19 pandemic, the SARS-CoV-2 genomes have accumulated genetic diversity, leading to increased transmission with altered viral properties (Kraemer et al. 2021).
- Madrid has been the epicenter of COVID-19 in Spain, primarily due to its high population density and mobility. The city has 3.3 million people, with 6.8 million across the metropolitan area. Up to March 15 2021, roughly 605 000 persons had been diagnosed with SARS-CoV-2 infection and 14 000 had died in the Madrid region (Ministerio de Sanidad, 2021; Instituto Nacional de Estadística, 2021). These figures refer to laboratory-confirmed cases, which underestimate the true number as testing access was limited during the earlier stages of the pandemic (Soriano and Barreiro, 2020).
- The mobility of hosts and/or vectors has always influenced the transmission of disease (Tizzoni et al., 2014), and this is true for coronavirus disease 2019 (COVID-19) (Kraemer et al., 2020).
- The first case of coronavirus disease 2019 (COVID-19) was confirmed in Malaysia on January 25, 2020, marking the first wave of infection in the country that lasted for about 3 weeks (Ministry of Health Malaysia (MOH), 2020). The total number of cases was low, with 22 confirmed infections, 20 of which were imported, and no fatality.