This evolution makes COVID-19 similar to other viruses we've seen. "That's really the natural course of a virus," Amiji says. It's also the reason you're more likely to get COVID-19 twice now than you were just four months ago. New variants like BA-4 or BA-5, which were unhe...
Researchers in Spain recently presented preliminary results of a study documenting the case of a 31-year-old woman who caught Covid-19 twice within three weeks. The woman, a healthcare worker, was fully vaccinated and received a booster shot 12 days before testing positive for the Delta varian...
Talking on the phone generates an invisible spray of airborne droplets. A person with COVID-19 can have a lot of virus in the mucous at the back of their throat, so they're likely spraying the virus on their phone every time they make a call. If an infected person hands their phone ...
Can COVID-19 strike twice?This study suggests that primary SARS-CoV-2 exposure may protect against reinfection in rhesus macaques.doi:10.1038/s41579-020-0424-xAshley YorkNature Reviews Microbiology
根据It takes a few weeks or the body to build the ability to fight the COVID-19 after injection.Sometimes the vaccines might not work well in the body.So it's best to keep wearing face masks in public and wash your hands often.注射后,身体需要几周时间来培养对抗COVID...
However, if your healthcare provider recommends that you continue any medicine on a regular basis, follow their instructions exactly. Learn more: COVID-19 Vaccines: Get the Facts This is not all the information you need to know about Vicks NyQuil products for safe and effective use and does ...
The U.S. Centers for Disease Control and Prevention says COVID-19 most commonly spreads through respiratory droplets, but the agency says the virus can land on surfaces and objects where a person can be infected by touching their mouth, nose, or eyes after touching the infected surface. But...
Recently, due to the COVID-19, online course has become a heated topic at the moment. Different people hold different attitudes towards online course. Just as a saying goes, every coin has two sides, and this is no exception. For some...
Human immunodeficiency virus (HIV) is a virus that weakens the immune system and decreases the body’s ability to fight infections. It is mainly sexually transmitted but can also be spread via blood (sharing needles or syringes) or from mother to child during pregnancy, birth, or breastfeeding...
During the COVID-19 outbreaks, make sure to reduce the time spent outside, don't visit and have meal with relatives and friends, try to stay at home. Do not go to crowded public places, especially in a relatively enclosed space with less air flow such as: public baths, hot springs, ...