Pfizer and BioNTech are teaming up on a coronavirus vaccine. Photo: Drew Angerer/Getty Images

Patients who received an experimental coronavirus vaccine being developed by Pfizer and BioNTech generated immune responses to the virus, and there were no life-threatening side effects, according to early trial results posted Wednesday and reported by STAT.

The big picture: This particular vaccine is still a long ways away from proving it works and getting federal approval, but it's an encouraging first step that the vaccine appears to trigger an immune system response and is mostly safe.

Go deeper: Pfizer says it won't put "huge price" on coronavirus vaccine

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Updated 17 hours ago - Technology

Facebook, Twitter take down Trump post saying kids are immune to coronavirus

Photo: NurPhoto/Getty Images

Facebook removed a video post from President Trump Wednesday in which he claimed in an interview with Fox News that children are "almost immune" to COVID-19.

Why it matters: It’s the first time that Facebook has removed content from Trump's account for violating policies on coronavirus-related misinformation.

Updated 11 hours ago - Health

World coronavirus updates

Data: The Center for Systems Science and Engineering at Johns Hopkins; Map: Axios VisualsThe

The Philippines' economy sunk into recession as its gross domestic product shrank 16.5% in the second quarter — marking the lowest reading since 1981, official figures show.

The big picture: Millions of Filipinos went on lockdown Tuesday as cases surged past 106,300, with stay-at-home orders in place for two weeks in Manila and nearby provinces on the island of Luzon, per the BBC. The economy's contraction is the "deepest" on record, Bloomberg notes.

Fauci: Coronavirus task force to examine aerosolized spread


A sneeze. Photo: Maartje van Caspel/Getty Images

The White House coronavirus task force will examine more closely just how much SARS-CoV-2 might be transmitted via aerosols, and not just from droplets, NIAID director Anthony Fauci said Wednesday at an online forum sponsored by Harvard T.H. Chan School of Public Health.

Why it matters: The longer the coronavirus can remain infectious in the air, the more likely it can infect people, particularly indoors — leading to the possible need to alter air filtration and circulation within buildings.