Rapid antigen tests provide results quickly and are available at testing sites or for use at-home. PCR tests are more likely to detect the virus compared to antigen tests. You may choose to get a PCR test at a testing site or healthcare facility. If you do not test at the right time, you are more likely to get an inaccurate test result. If you have been exposed to COVID-19 and do not have symptoms, you should test 5 full days after your exposure. If you have COVID-19 symptoms, you should get tested for COVID-19 immediately. A viral test tells you if you are infected with the virus that causes COVID-19. Get tested if you have COVID-19 symptoms. Turning your thermostat to the “ON” position instead of “AUTO” to ensure your HVAC system provides continuous airflow and filtration.ĬDC’s interactive ventilation tools can help you see how much you can improve ventilation in your home or school.Turning on exhaust fans and using other fans to improve air flow.Using portable high-efficiency particulate air (HEPA) cleaners.Increasing air filtration in your heating, ventilation, and air conditioning (HVAC) system, such as by changing filters frequently and using filters that are properly fitted and provide higher filtration.Bringing in as much outdoor air as possible-for example, opening windows.Spending time outside when possible instead of inside can also help: Viral particles spread between people more readily indoors than outdoors.Īctions that can improve ventilation and filtration include: Improving ventilation and filtration can help protect you from getting infected with and spreading the virus that causes COVID-19. Improving ventilation (moving air into, out of, or within a room) and filtration (trapping particles on a filter to remove them from the air) can help prevent virus particles from accumulating in indoor air.
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