Machine Learning Times
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In Coronavirus Response, AI is Becoming a Useful Tool in a Global Outbreak


Surveillance data collected by show confirmed cases of the new coronavirus in China.

Originally published in StatNews, January 29, 2020

Artificial intelligence is not going to stop the new coronavirus or replace the role of expert epidemiologists. But for the first time in a global outbreak, it is becoming a useful tool in efforts to monitor and respond to the crisis, according to health data specialists.

In prior outbreaks, AI offered limited value, because of a shortage of data needed to provide updates quickly. But in recent days, millions of posts about coronavirus on social media and news sites are allowing algorithms to generate near-real-time information for public health officials tracking its spread.

“The field has evolved dramatically,” said John Brownstein, a computational epidemiologist at Boston Children’s Hospital who operates a public health surveillance site called that uses AI to analyze data from government reports, social media, news sites, and other sources.

“During SARS, there was not a huge amount of information coming out of China,” he said, referring to a 2003 outbreak of an earlier coronavirus that emerged from China, infecting more than 8,000 people and killing nearly 800. ”Now, we’re constantly mining news and social media.”

Brownstein stressed that his AI is not meant to replace the information-gathering work of public health leaders, but to supplement their efforts by compiling and filtering information to help them make decisions in rapidly changing situations.

“We use machine learning to scrape all the information, classify it, tag it, and filter it — and then that information gets pushed to our colleagues at WHO that are looking at this information all day and making assessments,” Brownstein said. “There is still the challenge of parsing whether some of that information is meaningful or not.”

These AI surveillance tools have been available in public health for more than a decade, but the recent advances in machine learning, combined with greater data availability, are making them much more powerful. They are also enabling uses that stretch beyond baseline surveillance, to help officials more accurately predict how far and how fast outbreaks will spread, and which types of people are most likely to be affected.

“Machine learning is very good at identifying patterns in the data, such as risk factors that might identify zip codes or cohorts of people that are connected to the virus,” said Don Woodlock, a vice president at InterSystems, a global vendor of electronic health records that is helping providers in China analyze data on coronavirus patients.

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