(World Health Organization)
Health and Science
'Ring vaccination,' explained
The World Health Organization’s Dr. Peter Salama explains what ring vaccination means.
Read More
Up next in Health
promo
0:52
'Ring vaccination,' explained
promo
2:18
His mother is an anti-vaxxer, but at 18, it's his choice
promo
5:10
B. Smith's illness was taking a toll on her husband. Then he found another love.
promo
2:13
We tried folding like Marie Kondo. Here's how it went.
promo
2:37
Here’s why the rise of superbugs is so dangerous
promo
4:39
Your at-home DNA test results could be used to solve cold cases
promo
3:37
‘I don’t want to lose my dad’: The wait for a liver that may never come
promo
1:54
'International search' begins for rare blood type of toddler with cancer
promo
1:58
Scientist claims he’s created gene edited babies. Most scientists are shocked and skeptical.
promo
1:29
What is adenovirus?
promo
1:44
What’s going on with romaine?
promo
1:26
Focusing on the bad: Here's why we notice — and remember — negative things
promo
2:55
How preexisting conditions became a central issue ahead of the 2018 midterm elections
promo
0:58
Here's how the poison ricin affects the body
promo
0:47
3 questionable claims made by Gwyneth Paltrow's lifestyle site Goop
promo
1:11
What is salmonella?
promo
0:51
More than 70 people overdose in park in New Haven
promo
0:59
'Worm' allegedly crawls out of woman's fish at New Jersey restaurant
promo
0:53
This teen got hookworms at the beach. Here's how to avoid them.
promo
11:11
This town says it's dying of cancer. Can one doctor help them get out?
promo
0:47
Psychiatrist on family separation: ‘The worst nightmare I can imagine for a child’