CNN Health

Where did monkeypox come from, what are the signs and symptoms and how worried should you be? Here's what we know.

Children with strong family connections are associated with a high likelihood of flourishing in life, a new study found.

As waves of new coronavirus variants circulate the globe, one thing has become clear: human immunity against the virus fades over time.

The global toll of sudden and unexplained hepatitis in children has risen to 621 cases from 34 countries, the European Centre for Disease Prevention and Control said in an update on Thursday.

Officials at the US Centers for Disease Control and Prevention are closely tracking recent clusters of monkeypox infections around the world -- and possible cases in the United States.

The CDC signed off on boosters for 5- to 11-year-olds following the independent vaccine advisers recommendation that the Pfizer/BioNTech Covid-19 vaccine provided more benefit than harm, which the US Food and Drug Administration authorized earlier this week.

The unexpected discovery of "ghost" fossils belonging to tiny, ancient organisms could provide insights about how life reacts to climate change in Earth's oceans.

In the Red Sea off the coast of Egypt, bottlenose dolphins were spotted in 2009 doing something unusual. They lined up to rub their bodies against coral.

The United States is preparing to welcome more displaced Ukrainians now that the Biden administration has approved the first group to enter through the new Uniting for Ukraine program. Ukrainians began arriving through the program this month.

Three-year-old Alexis Tyler survives on Gerber Lil Crunchies cheese puffs and the chocolate flavor of a specialty nutritional formula called Neocate. Her mother hasn't been able to buy that formula for her since March.

The US Centers for Disease Control and Prevention's independent Advisory Committee on Immunization Practices (ACIP) will meet Thursday to discuss updates on Covid-19 vaccine safety and effectiveness for children ages 5-11 years, CDC guidance on boosters for that age group and the framework for that booster dose.

There are easy ways to increase our levels of daily gratitude, and good mental and physical health reasons to do so.

The US Centers for Disease Control and Prevention is collaborating with Massachusetts health officials on an investigation into a case of monkeypox, the agency said Wednesday in a statement.

The head of the US Centers for Disease Control and Prevention urges counties with high Covid-19 community levels to encourage people to mask up in public indoor settings.

Nearly 18 months after getting covid-19 and spending weeks in the hospital, Terry Bell struggles with hanging up his shirts and pants after doing the laundry.

The Solar Orbiter mission's first close pass of the sun in March has revealed our star in a new light.

A doctor at Le Bonheur Children's Hospital in Memphis, Tennessee, says he admitted two young patients -- a toddler and a preschooler -- because the specialty formula they need is out of stock and they haven't been able to tolerate any replacements.

Two new colorful species of fish have been found in Brazil's Amazon Basin -- and they are already at risk of disappearing due to extinction.

Covid-19 surveillance is at a crossroads in the United States. With at-home tests now outnumbering those done in laboratories, official case counts are more incomplete than ever as the nation -- and world -- faces down increasingly transmissible coronavirus variants.

Covid-19 infections are on the rise, with most US states reporting an increase in cases. According to the US Centers for Disease Control and Prevention, the highly contagious BA.2.1.21 subvariant of Omicron is now the dominant strain of coronavirus nationwide.