The Vaccines

The Houston Methodist hospital system is now the first U.S. hospital to require all staff to be vaccinated against Covid-19. …

U.S. health officials raise concerns about the company’s latest efficacy data — In a highly unusual move, a U.S. health agency raised concerns on Tuesday that AstraZeneca had not provided the most current data about its Covid-19 vaccine in a press release it issued Monday. In the release, which garnered excitement from public health experts, the company said its vaccine was 79%…

Families planning spring and summer travel can take steps to reduce risk, even though children can’t yet be vaccinated — As the U.S. vaccine rollout continues its slow march across the country, spring follows in its wake. That means parents are facing the arrival of spring break and, quick on its heels, the advent of summer. …

A roundup of the most important Covid-19 vaccine news this week — Around the world, six vaccines have been approved for limited use and seven approved for full use. This week, China authorized a fifth vaccine from Anhui Zhifei Longcom and IMCAS. Vaccines are being rolled out in many nations, but access to vaccines and vaccination rates continue to vary widely. Israel…

Dear Reader, When President Joe Biden declared on his campaign trail that he would administer 100 million doses of a Covid-19 vaccine in his first 100 days, I admit that I was highly skeptical. At the time, optimism seemed out of reach. But right now is a very different time…

Enlarged nodes in an armpit may be a side effect of Covid-19 vaccination — For those of us with breast tissue, the discovery of a lump in an armpit tends to immediately raise the specter of cancer. These lumps often occur at lymph nodes, which are debris traps for lymph fluid draining from the breast and all of the things lymph carries with it…