How Long After Testing Positive for COVID Are You Contagious?

Published: September 10, 2024

Have you been exposed to someone with COVID-19? Not sure whether you need to isolate or where to turn for treatment? Navigating the ever-changing information about COVID-19 and staying up to date with the latest COVID guidelines can be challenging. This article will provide clear, helpful answers to the most frequently asked questions about this illness, including the current COVID isolation guidelines and where to turn for treatment if your symptoms are severe.

Is it COVID-19 or the Flu?

It’s not surprising that you may wonder if you’re suffering from COVID-19, a cold, or the flu since many of the symptoms overlap. However, each of these illnesses is caused by different viruses. Colds are caused by one of over 200 different viruses, with the most common being rhinovirus. The flu is caused by influenza viruses, which tend to circulate during winter months. COVID-19 is caused by a coronavirus called SARS-CoV-2, with surges throughout the year as new mutations develop.

While some people infected with COVID-19 are asymptomatic, there are some common symptoms of COVID-19, including:

Fever
Chills
Fatigue
Sore throat
Congestion
Body aches
Runny nose
Headache
Cough
Loss of appetite
Diarrhea
Loss of taste or smell (usually not seen with a cold or the flu)

The severity of your COVID-19 symptoms depends on the variant you’ve contracted, whether you’ve received the COVID vaccine, and how strong your immune system is. But even if your symptoms are mild, if you have COVID-19, you may be contagious. And, if you spread it to others with weakened immune systems, they could get much sicker. That’s why it’s a good idea to get a COVID test when you have cold or flu-like symptoms or a fever.

COVID-19 is Contagious Even Without Symptoms

You may be contagious if you’ve knowingly or unknowingly been exposed to COVID-19. According to the CDC, anyone infected with COVID-19 can spread it, even if they are asymptomatic. In fact, if you’re in close contact with others, you could spread COVID-19 one to two days before any symptoms arise.

How Long is COVID Contagious?

Understanding how long is COVID contagious is vital for determining when it’s safe to be around others again. The COVID contagious period typically lasts up to ten days after the onset of symptoms. However, it may vary depending on factors such as the severity of the illness and whether you have underlying health conditions. Here is a COVID contagious timeline with key stages of contagiousness, from incubation to the end of COVID infectious period:

Phase	Timeframe	Symptoms/Actions	Testing Recommendations	Isolation Guidelines

1. COVID Incubation Period	2 to 14 days (typically 3 to 7 days)	Monitor for symptoms (fever, cough, etc.)	Test if symptoms appear	No isolation needed unless symptoms develop

2. Contagious Period Start	1 to 2 days before symptoms appear	Possible asymptomatic spread	Consider testing if exposed	Begin isolation if symptomatic

3. Peak Contagiousness	First 5 days of symptomatic illness	Highest risk of spreading to others	Test immediately	Strict isolation recommended

4. End of Contagious Period	10 days from symptom onset	Contagiousness decreases if symptom-free/improving	No test needed if symptom-free	End isolation if fever-free for 24 hours and symptoms improving

Something to note is that the Centers for Disease Control and Prevention (CDC) has updated its respiratory isolation guidance, which now applies to all respiratory viruses, not just COVID-19. The CDC COVID isolation guidelines remove a fixed isolation period, instead basing it on fever and symptom improvement, and recommend post-isolation precautions for at least 5 days for the general public.

References

Can You Get COVID-19 if You’re Vaccinated?

Yes, even if you’re vaccinated, you can still get and spread COVID-19. Vaccines are highly effective at preventing severe illness, hospitalization, and death, but they are not 100% effective at preventing infection. This means that breakthrough cases—where vaccinated individuals test positive for COVID-19—can occur, particularly with new variants of the virus. If you develop symptoms or have been exposed to someone with COVID-19, it’s important to take precautions, such as staying home, getting tested, and wearing a mask around others.

When to Test for COVID-19

A COVID-19 test is vital to determine if you have COVID so that you can get treatment if needed and learn what precautions you should take. Below are some testing guidelines:

If you have symptoms, test immediately. If your first test was negative, follow the instructions that came with your test and test again.
If you were exposed to someone with COVID-19. If you’re not exhibiting symptoms, wait at least 2 days after exposure before testing. Testing too early could cause an inaccurate result.
If you will be in contact with a high-risk person. If you know you were exposed, consider testing before coming in contact with older adults, anyone who may be immunocompromised, or anyone with a medical condition.

Remember, if you receive a negative result on your at-home test, it simply means the test didn’t detect the virus. It doesn’t rule out an infection. Antigen at-home tests are less accurate than PCR tests, so you should perform a repeat test 48 hours after a negative result on your at-home test if you’re still concerned that you have COVID.

COVID Testing Services at AllCare

At AllCare, we know how important it is to address your specific needs and concerns when it comes to COVID-19. That’s why our compassionate urgent care and primary physician team provides a comprehensive approach to the care you need—all in one location. We offer PCR tests and rapid antigen COVID tests to provide you with an accurate diagnosis. Contact us today!