We are not yet sure how long COVID-19 immunity lasts, but experts agree that there is little cause for alarm and that a vaccine will likely still be successful.
Scientists use herd immunity to describe the point at which a population is sufficiently immune to a disease to prevent its circulation.
The most important ways to prevent transmission are still the same, whether SARS-CoV-2 spreads via tiny droplets or larger ones.
The first few weeks of a keto diet may come with a spate of flu-like symptoms, including nausea, fatigue and dizziness, according to a new study.
A new study finds that resting heart rate can vary between individuals by up to 70 beats per minute, calling into question how physicians use one of the most fundamental vital signs.
Although CDC data suggest an increase in life expectancy as of 2018, the U.S. continues to lag behind comparable countries.