My brother has covid. he tested positive last thursday 2-17 and still positive today 2-24. really no way to isolate but just have a mask on. we are all vaccinated +boosted with pfizer. will i inevitability get this? i feel fine since thursday?

Per CDC Guidelines: You do not need to stay home unless you develop symptoms. Even if you don’t develop symptoms, get tested at least 5 days after you last had close contact with someone with COVID-19. Watch for symptoms until 10 days after you last had close contact with someone with COVID-19. More info: https://www.cdc.gov/coronavirus/2019-ncov/your-health/quarantine-isolation.html

Your brother’s last positive test indicates that he is still contagious. The typical incubation period is 3 to 5 days, but a longer period is possible. The vaccinations are protective and lessen the symptoms. Watch for fever,shortness of breath, and test if symptoms develop. Within your household, try to maintain distance.