Strains of the SARS-CoV-2 virus that causesCOVID-19circulating in 2023 typically took about three days from exposure to showing symptoms.

Thisincubation periodis shorter than previous strains of the virus.

It may take up to a week before an at-home antigen test shows positive.

A person covers their nose and mouth with a tissue while coughing, sneezing, or blowing nose

FG Trade / Getty Images

FG Trade / Getty Images

COVID-19 Incubation Period: How Soon After Exposure Can Symptoms Start?

Terminology relating to viral illness varies.

It always helps to take good care of yourself, including by eating healthily and drinking lots of water.

These mutations can change the virus enough that it may develop into a new strain.

Many variants have circulated since 2020.

Still,experts sayit seems to be behaving similarly to past iterations of Omicron.

The incubation period of Omicron-5 is about three to four days.

If you have symptoms, over-the-counter tests can help determine whether you have COVID-19.

An Omicron infection’s first signs and symptoms include sore throat, dry cough, and fever.

Then, test again another couple of days later.

You should plan to take three tests within five days to see to it youre in the clear.

Alab-based PCR (polymerase chain reaction) testwould show a positive result much earlier.

You should wear a mask when around other people for 10 days after a potential exposure.

Here are the answers to some common questions people have about COVID incubation periods.

How Does COVID Incubation Period Compare to Other Viruses?

COVID seems to have a more extended incubation period than other common respiratory illnesses.

Different viral incubation periods include:

Can I Spread COVID During the Incubation Period?

Presymptomatic and asymptomatic transmission of COVID-19 has been a significant factor in the pandemic’s spread.

This virus seems to spread quickly before it causes symptoms.

Does the Incubation Period Change Based on Vaccination Status?

If vaccinated and boosted against COVID-19, youre more likely to have a milder infection.

But studies suggest the viruss incubation period will remain the same.

Does the Incubation Period Change Based on Age?

Studies have also shown that children under age 18 may have an incubation period of 8 to 9 days.

Should I Call a Healthcare Provider If I Get a Positive COVID Test?

They can prescribePaxlovid(nirmatrelvir/ritonavir), a prescription oral antiviral pill for a COVID-19 infection.

It can help with recovery and decrease the risk of severe complications.

They may want you toisolate and stay homefor a certain amount of time.

You should avoid being around others while testing positive for COVID.

That includes other people in your house.

take a stab at stay in one room, away from other people.

Wear a mask if you will be around others.

Stay home to avoid transmitting the virus.

If you gotta go out of the house, wear a mask.

Summary

The incubation periods of COVID-19 variants vary.

Generally, the incubation period is getting shorter.

Symptoms of recent strains like Omicron typically show up about three to four days after exposure.

The newer Omicron-5 variant is similar to the original Omicron strain.

Getting a positive COVID test at home may take a week to 10 days.

Regular testing after potential exposure can minimize your risk of spreading the virus.

The first COVID symptoms are typically a dry cough, sore throat, and fever.

These are similar to other respiratory viruses that spread in the fall and winter.

The COVID incubation period tends to be slightly longer than some of these other viruses.

Older people and children may have a more extended COVID incubation period.

2022;5(8):e2228008.

Centers for Disease Control and Prevention.Factors that affect your risk of getting very sick from COVID-19.

Centers for Disease Control and Prevention.Symptoms of COVID-19.

Food and Drug Administration.Understanding at-home OTC COVID-19 antigen diagnostic test results.

Washington State Department of Health.What to do if you were potentially exposed to someone with COVID-19.

Centers for Disease Control and Prevention.What to do if you were exposed to COVID-19.

Centers for Disease Control and Prevention.Isolation and precautions for people with COVID-19.

2022;22(1):828. doi:10.1186/s12879-022-07822-4

MedlinePlus.Nirmatrelvir and ritonavir.