News and Events

HDSR's Xiao-Li Meng on Biased Vaccine Surveys

December 9, 2021
When Delphi-Facebook and the U.S. Census Bureau provided estimates of COVID-19 vaccine uptake last spring, their weekly reports drew on responses from as many as 250,000 people.

The data sets boasted statistically tiny margins of error, raising confidence that the numbers were correct. But when the Centers for Disease Control and Prevention reported actual vaccination rates, the two polls were off — by a lot. By the end of May, the Delphi-Facebook study had overestimated vaccine uptake by 17 percentage points — 70 percent versus 53 percent, according to the CDC — and the Census Bureau’s...

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Trust in Science Round 2 Funding Awarded

July 28, 2021

Congratulations to Matthew Baum, Elena Glassman, Hanspeter Pfister, and Minttu Rönn, recipients of recent awards from the HDSI Trust in Science Fund. You can read more about their projects, and our previous awards, here.


HDSI Postdoc Isabel Fulcher COVID-19 work in Peru

May 11, 2021

To elucidate why the virus has been so lethal in Lima, Peru, Biostats alum Isabel Fulcher PhD '18, currently a postdoctoral fellow in the HMS Department of Global Health and Social Medicine and the Harvard Data Science Initiative, will work with the Peruvian community health organization Socios En Salud to develop a better understanding of viral behavior in the Peruvian context.

To learn more check out the...

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