Updates: CDC director calls Capitol riots a likey 'surge event'

  • The violent insurrection could spread the coronavirus widely because thousands of people did not wear masks and have since left Washington for various parts of the country, said Dr. Robert Redfield.
  • America's current surge of cases has led to widespread deaths nationwide. Over the last month, 31 states and nearly 1,200 counties have reported their worst weekly death tolls of the entire pandemic.
  • Two major variants of the virus have emerged in recent weeks, and experts say the available vaccines should remain effective.

Staying Safe

What are the symptoms of coronavirus?

Here’s what to know about the symptoms and what to do if you have them. It's important to take precautions to protect not only your health, but also that of others.

Read More

Will COVID-19 vaccines work on the new virus strains?

A coronavirus variant in the U.K. has caused alarm because it might spread more easily. But even if that turns out to be true, experts say the COVID-19 vaccines being rolled out will likely still work on the strain.

Read More

Do I have a winter health issue or COVID-19?

From winter allergies to dry air, these are the differences between a seasonal problem and the coronavirus.

Read More

Will the COVID-19 vaccine cause an allergic reaction?

The percentage of people who have actually experienced an allergic reaction to the Pfizer vaccine is low. Here's everything you need to know about vaccines and allergies.

Read More

How can I persuade someone to get the COVID-19 vaccine?

Medical experts say vaccine-induced herd immunity is the best way to end the pandemic. Here's what everyday Americans can do to encourage their families, friends and community members to get the vaccine.

Read More

Will travel bans help contain new coronavirus strains?

A newly identified variant of the coronavirus has led over 40 countries to impose travel restrictions against the United Kingdom, which registered a record number of daily cases.

Read More

Am I immune to the coronavirus if I’ve already had it?

You have some immunity, but how much and for how long are still unanswered questions.

Read More

What are the treatment options for COVID-19?

There are several treatment options, and which one is best depends on how sick someone is.

Read More

How does the coronavirus affect the heart?

Even though it’s known as a respiratory virus, doctors believe the coronavirus can directly infect the heart muscle and cause other problems leading to heart damage.

Read More

Public health glossary

What's the difference between quarantine and isolation? Here's a guide to the public health terms used in the coronavirus coverage.

Read More

WHO's FAQ guide

See the World Health Organization's FAQ guide to get informed about the coronavirus.

Read More

News near you

Manage Locations

Watch now

What do we know so far about the new South African coronavirus strain? Yahoo News Explains.

Scientists are closely monitoring a new coronavirus variant that was first identified in South Africa and seems to be more transmissible. It could also make current antibody drugs and vaccines less effective.  Jacob Glanville, founder and CEO of Centivax, a computational immuno-engineering group that focuses on making antibody therapeutics and vaccines, explains what we know so far about the new variant.
  • 04:17
  • 03:01
  • 05:29
  • 01:28
  • 04:43