Vaccines developed early in the COVID-19 pandemic still provide strong protection against severe disease, hospitalization, and death. But SARS-CoV-2, the virus that causes COVID-19, continues to mutate. Many of these mutations alter the spike protein, which the virus uses to enter and infect cells. These mutations help the virus to […]
Seasonal influenza vaccines are updated every year, depending on what strains are circulating globally, leaving many people—especially those who still contracted COVID-19 after 2 booster shots—wondering why vaccines against SARS-CoV-2 haven’t changed as variants have come and gone. Currently available COVID-19 vaccines are based on the spike protein of Wuhan-Hu-1, […]
BioNTech and Pfizer’s COVID-19 vaccine will likely offer strong protection against any severe disease from the new Omicron virus variant, BioNTech’s Chief Executive told Reuters, as the firm weighs the need to upgrade its commonly used shot. Lab tests are underway over the next two weeks to analyse the blood […]
The Delta variant of COVID-19 is associated with approximately double the risk of hospitalisation compared with the Alpha variant, according to a new nationwide study published as a research letter in The Lancet. Two vaccine doses still provide strong protection against the Delta variant but it may be at a lower […]
