William Hanage

Associate Professor of Epidemiology, Harvard T. H. Chan School of Public Health

Expertise: Epidemiology, Infectious diseases




Misleading Wall Street Journal opinion piece makes the unsubstantiated claim that the U.S. will have herd immunity by April 2021

in Wall Street Journal, by Marty Makary

— 26 Feb 2021

"The article’s claim that the U.S. is near herd immunity rests on two numbers: 1) the detection of infections by testing (claimed to be 10 – 25 percent) and 2) the infection fa..

Telegraph article describing the hypothesis that face masks can variolate a population receives mixed reviews on its scientific accuracy

in The Telegraph, by Georgina Hayes

— 24 Sep 2020

"The Telegraph headline is obviously misleading but the subheading is accurate. Masks don’t give immunity; rather, the argument is that infections are milder or asymptomatic and ..


New York Magazine article on children’s risks from COVID-19 is accurate, but more context regarding difference in risk between young and older children would be helpful

In children, “the mortality risk from COVID-19 is actually lower than from the flu. The risk of severe disease or hospitalization is about the same”.

SOURCE: David Wallace-Wells, New York Magazine

Published: 09 Aug 2021


Asymptomatic and presymptomatic people can spread COVID-19

asymptomatic spread of COVID-19 never occurs

SOURCE: Jeffrey A. Tucker, American Institute for Economic Research, The Last Refuge

Published: 04 Jan 2021