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Thousands of people are ordering viruses from Eastern Europe to deal with intractable bacterial infections. Azeen Ghorayshi on the long-discussed promise of phage therapy and why it’s slow to catch on.

This NatGeo cover story by Joel Achenbach on why people doubt science will never stop being timely

Stunning explainer from Carl Zimmer on why measles is so contagious (and why Ebola is not).

“I was totally pro-vaccines, really, until Dr. Taylor.” Virginia Hughes asks her mum why she never got vaccinated

“It’s much easier to scare people than it is to dispel fears.” Seth Mnookin on talking to