Johnson & Johnson said blood clots have been reported with all Covid-19 vaccines. The author of the study they cited says they're wrong.
In the race between Covid-19 vaccines and the virus, hesitancy gives dangerous variants a leg up, expert says
Other US states could see scenarios similar to the Covid-19 crisis unfolding in Michigan, expert says
The US made little progress this week in preventing more Covid-19 deaths, an influential forecasting team says
Nearly half of US states reported an increase in Covid-19 cases this week. Here's what experts say can help stop another surge
Fauci says this is a pause and not a cancellation of the J&J vaccine. Here's how long a final decision may take
