21 June 2021At the beginning of the COVID-19 pandemic, the scientific community hypothesised that SARS-CoV-2 transmission would eventually be hindered by herd immunity, conferred by natural infection, vaccination, or both. However, it remains unclear whether initial infection with SARS-CoV-2 confers protection against reinfection and how long this protection would last. A study on SARS-CoV-2 led … Continue reading COVID-19 reinfections in The Gambia by phylogenetically distinct SARS-CoV-2 variants – first two confirmed events in West Africa