Health care workers wait in line for vaccinations at a site in Los Angeles.
Xinhua News Agency via Getty Images
With vaccine shortages looming, experts are debating whether it is important to receive two doses or whether it's better to give one dose to more people and give a second when the supply is better.
Alessandro Di Marco/EPA
Analysis of smartphone data shows why countries need to coordinate border closures to stop the spread of the new variant.
Getting vaccines to rural and hard-to-reach areas is critical for public health and ethical reasons.
Hector Roqueta Rivero/Moment via Getty Images
So far, the only COVID-19 vaccines authorized for use need to be kept frozen. But there are many places in the world that can't support a cold supply chain.
Open to eat indoors – but will you?
David Mbiyu/SOPA Images/LightRocket via Getty Images
Experts weigh in on whether they will sit and eat at a restaurant.
I am a physician, and I just got my first shot of the Pfizer COVID-19 vaccine.
With vaccines forthcoming for most Americans, many groups, including expectant mothers, are wondering if the vaccine is safe for them and their babies. A physician-scientist explains.
Say hello to Spike.
National Institute of Allergy and Infectious Diseases
It's the part of coronavirus that helps the virus get into your cells – and also the target of the leading vaccines.
The French government will not accept any passengers arriving from the U.K. amid fears over the new mutant coronavirus strain.
Steve Parsons/PA Images via Getty Images
A new strain of the SARS-CoV-2 virus that causes COVID-19 appears to be spreading fast in the UK. This probably isn't a big problem, but the data isn't in yet.
All your questions about the new coronavirus variant, answered by a microbial genomics researcher.
On Dec. 8, 2020, the first members of the public were given doses of a coronavirus vaccine.
AP Photo/Frank Augstein, Pool
The coronavirus vaccine was developed faster than any vaccine in history. It took just 332 days from the first sequencing of the virus genome to the first vaccines given to the public.
The number one scientific breakthrough for 2020: multiple vaccines to prevent COVID-19.
Philippe Raimbault/Photodisc via Getty Images
The development of multiple vaccines against the virus that causes COVID-19 has been hailed as the breakthrough of 2020. But there were many more supporting discoveries that made this possible.
There have been a few accounts of patients who have tested positive, then negative, then positive again for COVID-19.
So, if you have ever tested positive, there is a chance you could contract the virus again. And you could infect other people. You should still take the necessary precautions.
Sue Ogrocki/AAP Image
A new review from the Australian Academy of Health and Medical Sciences says managing the pandemic into 2021 will mean persisting with the measures that have made Australia's response successful so far.
Open windows and doors, use fans, and set your aircon to pull fresh air from outside.
After receiving the vaccine, health systems have a complicated job ahead of them.
AP Photo/Ng Han Guan
Health systems around the US are on the cusp of receiving COVID-19 vaccines. At the end of this months-long effort are the nitty-gritty details of how health care providers are giving people the vaccine.
Suddenly unable to smell your morning coffee? You likely have COVID-19.
Kseniya Ovchinnikova/Moment via Getty Images
COVID-19 patients often lose their sense of smell and taste. This is rare for a viral infection. At-home smell tests could be used as a screening tool and help slow the spread of the coronavirus.
A little bit of post-injection soreness is completely normal.
Jose Luis Pelaez Inc/DigitalVision via Getty Images
The side effects of new SARS-CoV-2 vaccines are a result of immune system activation. While uncomfortable, they are both normal and expected. They are a sign that the vaccine is working.
Rapid tests for COVID-19 are easy to administer and give fast results.
AP Photo/Julio Cortez, File
In September, production of rapid tests really ramped up in the US. But due to low accuracy and massive numbers needed, these tests alone are unlikely to have much of an effect on the pandemic.
It's not only shedding and reinfection which are different — there are actually two types of viral shedding.
Now there is a third possible vaccine for fighting the COVID-19 pandemic.
Jakub Porzycki/NurPhoto via Getty Images
There is now a third vaccine that prevents COVID-19 infections. It isn't quite as effective as the other two vaccines but it has advantages that may make it the frontrunner.
Transmission electron micrograph of particles of the SARS-CoV-2 virus.
The SARS-CoV-2 virus at the origin of the Covid-19 pandemic is one ten-thousandth of a millimeter in diameter. How can such a microscopic organism have such an immense impact on global health?