Medicine & TechnologySome people recently reported a COVID-19 vaccine side effect after their injection. Specifically, they said they've had heavier menstrual cycles and more cramping.
The CDC said earlier it is considering revising its mask guidance. This comes along with the increasing call of some experts for the easing of mask restrictions for outdoor activities.
Drug manufacturer, Pfizer Inc. said it has discovered the first confirmed cases of fake versions of COVID-19 vaccines it developed with BioNTech SE in Mexico and Poland.
Scientists recently found bacteria in sinks are the result of handwashing. Specifically, they discovered that this practice, that has shaped communities of microbes that stay and grow in domestic sinks' plumbing.
A paper has called on policymakers to act on the unequal distribution of COVID-19 vaccines, seeking fair access to needy populations, such as refugees and displaced communities.
The University of Oxford has launched a study that reinfects recovered COVID-19 patients to test what kind of immune response they have to help design tests that predict a person's immunity.
Two female lions at Pittsburgh Zoo is reportedly tested positive for SARS-CoV-2, the virus that causes COVID-19. The zoo believes they contracted the virus from an asymptomatic staff.
Pfizer CEO Albert Bourla said that a booster shot of the COVID-19 vaccine is likely needed within 12 months to get fully vaccinated. He added that annual revaccination might be needed, like flu shots.