10-Day Medical History Streak
Read one short story about a medical pioneer each day. Check in with their name and discovery.
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Health · Facts & stats · iChallenge network
Daily facts and stats about the history of medicine and great medical discoveries, plus real challenges to put them to work.
Who developed the first smallpox vaccine in 1796?
Jenner used cowpox to protect against smallpox.

One ranked attempt per day. Practice as much as you like.
Join one, log your days or post your proof. Finishing earns XP and the Finisher badge.
Read one short story about a medical pioneer each day. Check in with their name and discovery.
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Organize your home medicine cabinet and note any expired items to return through a local take-back program. Post a short write-up.
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Make a timeline of ten medical milestones. Post a photo link or write-up.
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Live counts from MedicineChallenge.com. All arena stats →
Earned on any arena, shown on your profile everywhere.
Add your email to keep your level, streak and badges if you switch devices, and carry them to every iChallenge arena. One email when you save; no spam.
Fund a prize on MedicineChallenge.com and your brand sits on the challenge card, the leaderboard and every finisher's share. Prizes only appear once they're funded, so players can trust what they see.
Play today's quiz round, post your score, and start a streak.
XP, levels, streaks and badges. Save your progress with an email and it follows you to every arena on the iChallenge network.
Everyone on this arena gets the same five questions each day, from easy to hard. You get one ranked attempt; practice rounds are unlimited.
100 points per correct answer, up to 50 more for answering quickly, a combo multiplier for answers in a row, and 150 bonus points for a perfect round.
Yes. Playing, streaks, badges and leaderboards are free. Some challenges carry a sponsor-funded prize; the challenge card shows it when one is funded.