Health officials are looking into Canadian data that suggests the risk of heart inflammation after Moderna’s Covid-19 shot is occurring at higher rates in younger adults than previously believed.
Two doses of Pfizer or AstraZeneca’s Covid-19 vaccine are nearly as effective against the highly transmissible Delta coronavirus variant as they are against the previously dominant Alpha variant, a study published on July 21 showed.
Los Angeles County will reimpose its mask mandate during the weekend of July 16 in the latest sign that public health officials are struggling with an alarming rise in coronavirus cases tied to the highly contagious Delta variant.
Executives from Pfizer met with government health officials to discuss Pfizer and BioNTech’s contention that booster shots for their COVID-19 vaccine will be necessary.
The United States is reviewing the need for a third Covid-19 booster shot among residents who have already been vaccinated but needs to see more data to know if additional shots could raise people’s risk of serious side effects, a U.S. health official said July 13.
U.S. Covid-19 cases are up around 11 percent over the previous week – almost entirely among people who have not been vaccinated – officials said on July 8, as the highly infectious Delta variant becomes the dominant Covid-19 strain in the country.
The United States administered Covid-19 vaccinations to around 600,000 children ages 12 to 15 last week after regulators cleared Pfizer’s and BioNTech’s shots for use in that age group, U.S. Centers for Disease Control and Prevention Director Rochelle Walensky said in a media call on May 18.
New cases of Covid-19 in the United States fell for a third week in a row, dropping 15 percent during the week ended May 2 to 347,000 – the lowest weekly total since October – according to a Reuters analysis of state and county data.
The European Medicines Agency (EMA) said on April 7 it had found a possible link between AstraZeneca’s coronavirus vaccine and reports of very rare cases of blood clots in people who had received the shot.
Coronavirus-related deaths worldwide crossed 3 million on April 6, according to a Reuters tally, as the latest global resurgence of Covid-19 infections is challenging vaccination efforts across the globe.
