Read on to find out more—and to ensure your health and the health of others, don't miss these Sure Signs You've Already Had COVID.

Researchers at the COVID Symptom Study are tracking the initial signs of new COVID cases via an app.

If you've not been vaccinated, the scientists say, symptoms are similar to the more well-known ones associated with earlier strains of COVID-19.

Chan, an epidemiologist and one of the COVID Symptom Study's lead investigators, told the New York Times.

If you experience any of the symptoms, get tested for COVID-19 ASAP, even if you've been fully vaccinated

Follow public health guidelines and help end this pandemic, no matter where you live—get vaccinated ASAP; if you live in an area with low vaccination rates, wear an N95 face mask, don't travel, social distance, avoid large crowds, don't go indoors with people you're not sheltering with (especially in bars), practice good hand hygiene, and to protect your life and the lives of others, don't visit any of these 35 Places You're Most Likely to Catch COVID