COVID-19 remains a concern for many, as it has since the pandemic began, but in recent months, a positive sign has emerged regarding a key virus measurement.
With the most recent variants such as BA.4 and BA.5, the incubation period, the time between when you're infected to when symptoms appear, has dropped to three days, Dr. Allison Arwady, commissioner of the Chicago Department of Public Health, has said. Most elements with both the aforementioned strains have moved faster compared to others, the doctor noted.
"That is excellent news from a control perspective and because one of the biggest challenges of COVID is that... when the incubation period is long, you can get infected with COVID, potentially have a long time before you have significant symptoms and it'll be spreading it," she said in a Facebook question-and-answer session this week. "So it's good news to see that incubation period getting shorter."
Previously, the average incubation period for infections associated with the alpha, beta and delta variants, was said to be five days.
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Still, official guidance from the Centers for Disease Control and Prevention states the incubation period remains two to 14 days for all COVID-19 infections. Typically, with BA.4 and BA.5, most people are testing positive about three days after contracting COVID, although some can still produce a positive test result for up to 10 days, according to health officials.
Regardless of the variant, a person with COVID-19 can be contagious 48 hours before they start developing symptoms, according to an article from Harvard Health Publishing at the Harvard Medical School. During this period, people may be more likely to spread the illness, as they may not be aware of the infection and taking the proper precautions.
With BA.5, also known as omicron, most transmission occurs during the one to two days before the onset of symptoms, and in the two to three days after the fact, the article stated. Based on that, what should you do if you happen to test positive?
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If you receive a positive COVID test result, CDC guidance states that you should stay home for at least five days and isolate from others in your residence. You are likely most infectious during these first five days.
If you had no symptoms, you can end isolation after day 5, according to the CDC.
If you had symptoms, however, you can only end isolation after day 5 if:
- You are fever-free for 24 hours (without the use of fever-reducing medication)
- Your symptoms are improving
If you still have a fever or your other symptoms have not improved, continue to isolate until they do, the guidelines state. How severe your symptoms are can also play a role.
If you had moderate illness - such as shortness of breath or difficulty breathing - or severe illness, including hospitalization due to COVID-19, or if you have a weakened immune system, you need to isolate through day 10.
Anyone who experienced severe illness, or has a weakened immune system, will want to consult your doctor before ending isolation as you may need a viral test to do so.
Those who continue to test positive should continue masking.
"You should continue wearing a mask and wait at least 48 hours before taking another test," the CDC recommends. "Continue taking antigen tests at least 48 hours apart until you have two sequential negative results. This may mean you need to continue wearing a mask and testing beyond day 10."
If your symptoms worsen or return after you end isolation, you'll need to restart your isolation at day 0, per the guidelines.
