Single dose of Pfizer vaccine more effective against variants in people with prior COVID-19 infection Study examines protective effect of a single dose of Pfizer-BioNTech vaccine against variants in people with or without prior COVID-19 infection. New trial compares inactivated COVID-19 vaccine to AZ Breakthrough infections with variants in people fully immunized against COVID-19 What we know about pregnant patients and COVID-19 vaccine safety Annual STI screening for all sexually active people under 30: new guidelines SARS-CoV-2 antibodies found in breastmilk after maternal COVID-19 vaccination Study suggests maternal COVID-19 immunization might have protective effect against COVID-19 infection in breastfeeding infants. Adverse effect rates with Pfizer-BioNTech and Moderna COVID-19 vaccines Active surveillance system collects near–real-time data from mRNA COVID-19 vaccine recipients in the United States. To test or not to test? While some pharmacists feel it’s a rewarding opportunity, lack of time and resources prevent others from embracing a role as community COVID-19 testers Untreated chronic diseases escalate in Canada during COVID-19 pandemic Report estimates that more than 130,000 Canadians with undiagnosed chronic diseases did not begin treatment in 2020. New HIV vaccine concept shows promise First Previous 66 67 68 69 70 Next Last