In the late 1800s, Edward Jenner, an English physician and scientist, observed that milkmaids who have previously contracted cowpox are immune to smallpox, a deadly virus from the same family. Curious ...
This article is republished from the Council on Foreign Relations. Read the original article here. Vaccination campaigns are widely considered to be a public health success story. Since Edward Jenner ...
The remarkable “bush-telegraph” would have immediately alerted Samburu tribes-people of our arrival in their vicinity. The speedy word-of-mouth system had already spread news throughout northern Kenya ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback