Child vaccination rates in the United States fell during the COVID-19 pandemic as many children skipped doctors appointments and states eased vaccine requirements during remote learning, according to a government study released on April 21.
The world is at risk of losing hard-won gains in fighting Covid-19 as the highly transmissible Delta variant spreads, but WHO-approved vaccines remain effective, the World Health Organization said on July 30.
According to the Pharmaceutical Research and Manufacturers of America (PhRMA), there are 264 vaccines in development to prevent and treat diseases.
