My colleague that i work very closely with tested positive for covid 19. i tested positive in april 2020. is there a chance that i can infect someone again?

Unlikely: Physicians are constantly updating knowledge and understanding about a virus that still is surprising. However, there are now a few studies suggesting that acute sufferers of COVID-19 do not seed virus to others after 10 days. This does support the shift to quarantine from 14 to 10 days. No reason to suspect that you could be a source of infection at this point.

COVID 19 concerns: Agree with Dr. Machanic. Chances of reinfection with the same strain of COVID 19 are extremely low.