Richard Harris appears in the following:
Thursday, February 18, 2021
Scientists say the pandemic will only end in the U.S. when we achieve what's called herd immunity. Play with our simulations to see how immunity can stop an outbreak in its tracks.
Wednesday, February 17, 2021
Scientists are trying to learn more about COVID-19 vaccines from original study participants. That quest is hampered because many people who received a placebo shot have now opted to get the vaccine.
Wednesday, February 10, 2021
COVID-19 vaccines appear to work against the new coronavirus strains, though scientists are warily watching a variant first seen in South Africa. Vaccines may need updates to keep pace with the virus.
Tuesday, February 09, 2021
Mutant coronaviruses can make vaccines less effective. At the same time, vaccines can contribute to virus mutations, but this is a slow process that should be manageable.
Wednesday, February 03, 2021
At least 70% of people will need to be immune from the coronavirus before COVID-19 can recede through a process known as herd immunity. Vaccines can play a role. But reaching the goal won't be easy.
Friday, January 22, 2021
Drugs for COVID-19 are sorted into three basic categories: They work, they don't work, or there simply isn't enough information to know. A generic steroid is one medicine that proved helpful.
Monday, January 18, 2021
First, can someone who has been vaccinated still spread the disease? Second, will the vaccine remain effective as the virus itself evolves? And third, how long will the vaccine's protection last?
Friday, January 15, 2021
There are many questions remaining about COVID-19 vaccines, such as how long protection will last and whether vaccinated people can spread the virus. Immunologists are working hard to get the answers.
Monday, January 11, 2021
Antibody-based drugs that bind to the coronavirus to prevent it from invading cells can help patients with mild to moderate COVID-19. But the medicines can be tough to find in time.
Wednesday, January 06, 2021
While logistical challenges have hampered use of antibody drugs to treat people with mild-to-moderate COVID-19, recent results show the medicines can be worthwhile.
Tuesday, January 05, 2021
Monoclonal antibody drugs for COVID-19 with mild to moderate symptoms are not widely used, in part because doctors aren't sure they work. New data could provide more confidence in these drugs.
Friday, January 01, 2021
The rollout of vaccines for COVID-19 has been slower than expected. Reasons include local logistics, lack of funding and staffing struggles during the winter holidays.
Wednesday, December 30, 2020
Colorado health officials found the variant of COVID-19 that spreads faster than the common strain. U.K. scientists identified the strain last week. It has spread in the U.K. and to other countries.
Tuesday, December 22, 2020
Monoclonal antibodies to prevent severe COVID-19 aren't being used as widely as expected. Medical staff shortages and patient transportation problems are two of the reasons.
Friday, December 18, 2020
The Food and Drug Administration says it will soon grant emergency authorization to Moderna's COVID-19 vaccine. NPR shares the latest news.
Wednesday, December 16, 2020
Common devices to measure oxygen in the blood don't work as well in people with darker skin, according to a new study. They are useful, but experts warn readings should be interpreted more carefully.
Wednesday, December 16, 2020
Fingertip devices that measure oxygen in the blood can sometimes give erroneous readings in people with dark skin, doctors report. The devices can say oxygen levels are normal when they're not.
Monday, December 14, 2020
Pfizer may now start shipping the inoculation to hospitals across the country. Health care workers and people in nursing homes and assisted living centers will be given priority for the vaccine.
Friday, December 11, 2020
Pfizer's COVID-19 vaccine may have side effects that can sometimes knock people out of work for a day or so. Hospitals are planning vaccine campaigns for their workers to avoid staff shortages.
Thursday, December 10, 2020
A Food and Drug Administration advisory committee is preparing to vote on whether to recommend Pfizer's COVID-19 vaccine for emergency use in the United States.