Facebook's third-party fact-checkers are reviewing content related to the virus, now deemed a public health emergency by the World Health Organization. When the fact-checkers rate something as false, Facebook will limit its spread and send a notification to people who have shared or are attempting to share that content. Facebook is also removing content that has been flagged by global health organizations for containing false statements or conspiracy theories -- like fake cures such as drinking bleach. It will restrict or block hashtags used to spread misinformation on Instagram, too.

Google's SOS Alert reorganizes Search results to show top news stories, any relevant local results, helpful information from trusted organizations and verified safety tips. The SOS Alert is one of Google's established crisis alert products, and like Facebook's efforts, it's meant to help users access information they can trust quickly and safely.

Today we launched an SOS Alert for searches at Google related to the 2019 Novel Coronavirus. We do these regularly for crisis events around the world where public safety might be at risk . Here's a refresher on what you'll find.... pic.twitter.com/RpwZE6gTvM — Google SearchLiaison (@searchliaison) January 30, 2020

Facebook is also offering free ad credits to help organizations run coronavirus education campaigns in affected regions, and the company is sharing aggregated and anonymized mobility data and population density maps with researchers at Harvard University's School of Public Health and National Tsing Hua University in Taiwan, so that they can better forecast the spread of the virus.