Kennedy Jr.’s sweeping changes to federal vaccine guidance are paused for now. But even if they’re reversed, lasting damage has already been done.

Friday briefing: What do the cuts in aid mean for the fight against Ebola in the DRC?
<p>In today’s newsletter: As the virus spreads across borders, health workers warn that weakened global support is making a prolonged crisis more likely</p><p></p><p>Ebola is spreading rapidly in parts of east Africa. The deadly disease, which kills around half of those it infects, is <a href="https



