We just got our 2nd positive case of COVID-19 who is the female partner of our 1st case- a US tourist.
She tested negative 3 times before during her 2-week quarantine. They met long before.
She tested positive on last day during 4th test.
Even if one took a more cautious note the index patient shows symptoms 19 days ago when he was with the partner who only tested positive now.
This is worrying.