Joseph: from what I’ve read, the general consensus seems to be that once someone recovered from it they’re immune for at least a year, but they can’t know 100%.
Once testing for anti-bodies gets underway, people will be able to test whether they – and especially their kids which have a greater chance of being asymptomatic – are already immune AND THEREFORE CAN’T TRANSMIT THE VIRUS TO ANYONE ELSE. They can also derive a potential treatment from the blood of recovered persons.
The question remains whether with the medical community so overwhelmed, these blood tests will be administered in the near future or not.