An experimental vaccine is used after exposure

The announcement connected tuberculosis to a specific bacterial agent.

Koch’s findings opened pathways to laboratory detection, although effective treatment took much longer.

The annual 24 March date commemorates Koch’s disclosure rather than the eradication of tuberculosis.

The nine-year-old boy received the first dose of a post-exposure rabies vaccination course after dog bites.

The boy’s case followed animal experiments; he did not develop rabies.

Meister’s recovery led people from many countries to seek the new treatment.

He noticed a fluorescent screen glowing during cathode-ray experiments in Würzburg.

His laboratory observation launched tests of a phenomenon later called X-rays.

The observation preceded the first famous hand radiographs and later clinical use of X-rays.

Once developed, the new radiation allowed physicians to see bones inside the living body without surgery.