The U-S is lifting COVID-19 vaccination requirements for foreign air travellers and at the border as of May 12th.
Canada ended its vaccination requirements for foreign visitors back in October.
The White House says deaths from COVID-19 around the world are at their lowest levels since the start of the pandemic, and 95 per cent lower in the U-S than they were in January 2021.
The Associated Press-NORC Center for Public Affairs Research poll finds that 17% of Americans say they are providing ongoing caregiving, part of an informal volunteer corps.
Reinfection so far has been rare. The best known example: Researchers in Hong Kong said a man had mild COVID-19 and then months later was infected again but showed no symptoms.
Antibodies are proteins the body makes when an infection occurs; they attach to a virus and help it be eliminated. Vaccines mimic an infection to spur antibody production.
Eli Lilly and Company announced the partial results Wednesday in a news release; they have not yet been published or reviewed by independent scientists.
The seven-day rolling average for new U.S. cases has climbed over the past two weeks to almost 42,000 per day. The nation also sees more than 700 COVID-19 deaths each day.
Questions persist about Donald Trump's health following his COVID-19 diagnosis, as well as the age of 77-year-old challenger Joe Biden.