The threats that Williamson's ideas present to disabled people are not just hypothetical.
Research has found that migrants and refugees don't spread diseases to host populations, though migrants themselves are often at higher risk of illness because of poor living conditions.
Plus, why Trump's turnaround on vaccine safety was very late—but still helpful.
A measles outbreak increases vaccination demand, a new bill would address the crisis of missing Native American women, and California's wet weather eases drought conditions.
The WHO has named vaccine hesitancy as one of the top 10 public-health threats of 2019. Here's how the anti-vaccination movement came about, and what to do about it.
Kids need to be vaccinated and adult travelers need booster shots.
Your guide to California's progressive new laws.
The perils of the “farm-food freedom” movement.
Because measles passes so easily between people, 96 percent to 99 percent vaccination rates are required for "herd immunity" to work.
The Ebola epidemic will likely lead to outbreaks of other diseases, but countries could prevent that with vaccination campaigns.
It’s better to be safe than sorry, and there’s nothing about the flu vaccine that’s dangerous.
As feared, the possibility of once rare or neglected diseases slopping out of the cauldron that is Syria is becoming more real.