While there are three safe and effective vaccines authorized in the U.S. to protect against COVID-19, there’s still a lot about vaccine immunity that researchers are still trying to figure out. One question has to do with the millions in the U.S. who have been infected with SARS-CoV-2 and recoveredคำพูดจาก เว็บสล็อต. Do they have natural immunity because of their infection, and if so, do they still need to get vaccinated? How much additional protection do the vaccines give them?
In a study published April 1 in Nature Medicine, researchers led by a team at Cedars-Sinai Medical Center report that people who recovered from COVID-19 generated the same level of antibodi…
Colon cancer is striking younger American adults with greater frequency, and more tumors are being detected in advanced stages, worrying shifts in the occurrence of the potentially lethal disease that are sparking calls for wider screening and prevention measures.
About 20% of people with colon cancer in 2019 were under the age of 55, almost double the rate seen in 1995, according to a report from the American Cancer Society. Three out of five of Americans found to have colon cancer in 2019 were in the advanced stages of the disease, up from just over half in the mid 2000s, according to the report.
“It’s alarming to see how rapidly the whole patient population is shifting younger,” Rebecca Siegel, the group’s senior scientific director of surveillance…
Nearly 50 years after 20 million Americans participated in the first Earth Day on April 22, 1970, more than 190 countries mark the annual day for raising awareness of environmental causes. And the stakes only grow as the years go by.
Though Earth Day has been dogged by rumors that it was founded by a murderer and as communist propaganda, the truth is much more straightforward — but no less fascinating. TIME spoke to Denis Hayes, a real organizer of the first Earth Day, dubbed “Mr. Earth Day” by the magazine in 1999. Hayes is now the president of the Bullitt Foundation, which doles out grants to environmental efforts.
Here, he tells the true story of founding of Earth Day, its proudest accomplishments and the work that still needs to be done.
T…