"I would recommend that people minimize social contact, and that means limiting all social engagements. That includes intimate gatherings among friends."

"I think the exception is if two households are in strict agreement that they are also going to reduce all outside contact and then those two households socialize together, to support one another. I can see social and mental-health advantages to that kind of approach."

From "The Dos and Don’ts of ‘Social Distancing’/Experts weigh in on whether you should cancel your dates, dinner parties, and gym sessions" in The Atlantic.

I've highlighted what one of 3 experts said.

The other 2 were less restrictive. One said, small gatherings "are probably okay as long as nobody has symptoms, respiratory symptoms." The other calls small gatherings "a gray zone" and recommending "not sitting very close, trying to keep distance. Wash your hands; avoid touching your face.... routinely disinfect... doorknobs, the bathroom faucets, those types of things... practicing good hygiene."