Don't Breathe Outdoor Smoke. Steer clear to avoid breathing problems.
What Causes a Cold Sore? Factors can include injury or stress.
Who Gets Pneumonia? Age and health affect your risk.
When Air Is Unhealthy. Stay indoors.
Need a Lung Function Test? Here's what it may reveal.
Global Measles Cases Surge as Vaccination Rates Fall, WHO Warns
New Trial Shows Pfizer’s mRNA Flu Shot Beats Traditional Flu Vaccine
New Flu Variant Could Bring Another Severe U.S. Season
Long COVID Can Take Eight Different Paths, Experts Say
New Measles Spread Across States Threatens U.S. Elimination Status
COVID Vaccination Safer For Kids' Heart Health Than Infection, Study Says
