New York Times
http://www.nytimes.com/
Accessed 21 December 2013

Michiaki Takahashi, 85, Who Tamed Chickenpox, Dies
By WILLIAM YARDLEY
Published: December 21, 2013
http://www.nytimes.com/2013/12/22/health/michiaki-taka
Excerpt
Dr. Michiaki Takahashi, whose experience caring for his 3-year-old son after the boy contracted chickenpox led him to develop a vaccine for the virus that is now used all over the world, died on Monday in Osaka, Japan. He was 85…