Yes, you can get COVID-19 again. A past infection does not guarantee long-term protection, and COVID-19 reinfection can happen weeks, months, or even longer after recovery. While vaccines, prior infection, and healthy immune responses can lower your risk of severe illness, they do not make you completely immune.
If you are wondering whether reinfection is common, how soon it can happen, what symptoms to watch for, and how to protect yourself, this guide explains the essentials in clear, practical terms. For more context on why a positive test can appear again after recovery, see Why Test Positive Again for COVID-19.
Table of Contents
- Can you get COVID-19 more than once?
- How soon can you get COVID-19 again?
- Does having COVID-19 before make reinfection milder?
- What are the symptoms of COVID-19 reinfection?
- How do you know if it is COVID-19 again or just a cold?
- Can you spread COVID-19 again if you are reinfected?
- Why reinfection happens
- Who is most at risk of getting COVID-19 again?
- Are vaccines still important if you already had COVID-19?
- What should you do if you think you have COVID-19 again?
- When should you call a doctor?
- How to lower your risk of getting COVID-19 again
- Common questions about COVID-19 reinfection
- The bottom line
Can you get COVID-19 more than once?
Yes. COVID-19 reinfection means getting infected again after recovering from a previous infection. The virus that causes COVID-19 can change over time, and immunity from a prior illness may fade or not fully protect against new variants. That is why COVID-19 reinfection can happen even after you seem to be fully recovered.
This is why people who have already had COVID-19 can still test positive again later and develop symptoms again. In other words, COVID-19 reinfection is possible even when you thought the first illness would protect you for a while.
How soon can you get COVID-19 again?
Reinfection can happen surprisingly soon, though it is more likely when enough time has passed for immunity to weaken or when a new variant is circulating. Some people recover and then face COVID-19 reinfection sooner than expected, especially if exposure levels are high.
In general, the risk of reinfection tends to rise when:
- Your immune protection from a previous infection has decreased
- A new variant is more able to evade immunity
- You have not received updated COVID-19 vaccines
- You are exposed often, such as in crowded indoor settings
While some people may think having COVID-19 once means they are protected for a long time, that is not always true. COVID-19 reinfection depends on timing, exposure, and how well your immune system can respond to a new version of the virus.
Does having COVID-19 before make reinfection milder?
Often, prior infection can reduce the chance of severe disease, but it does not guarantee a mild case. Some people with reinfection have only mild symptoms, while others become quite ill again. COVID-19 reinfection can still lead to significant symptoms, especially in higher-risk groups.
How severe a reinfection is can depend on several factors:
- Your age
- Whether you are vaccinated and up to date on boosters
- Your overall health
- The variant involved
- How long it has been since your last infection
People at higher risk for complications include older adults, those with weakened immune systems, and people with chronic conditions such as heart disease, lung disease, diabetes, or obesity. For these groups, COVID-19 reinfection deserves extra attention.
What are the symptoms of COVID-19 reinfection?
Symptoms of reinfection can look the same as the first infection or be somewhat different. Common symptoms include:
- Fever or chills
- Cough
- Sore throat
- Runny or stuffy nose
- Fatigue
- Headache
- Muscle aches
- Shortness of breath
- Loss of taste or smell
- Nausea, vomiting, or diarrhea
Some people may have very mild symptoms and mistake them for a cold or allergies. Others may have no symptoms at all but still spread the virus to others. COVID-19 reinfection does not always feel different from the first illness, so symptoms alone may not tell the full story.
How do you know if it is COVID-19 again or just a cold?
Because COVID-19 symptoms overlap with other respiratory illnesses, testing is the best way to know. If you have symptoms, especially after a known exposure, take a COVID-19 test as soon as possible.
At-home antigen tests can be helpful, but a negative result does not always rule out infection, especially early on. If symptoms continue, testing again after 24 to 48 hours may be useful. In some cases, a PCR test may be recommended. The CDC provides helpful testing and symptom guidance on its official COVID-19 testing page.
Can you spread COVID-19 again if you are reinfected?
Yes. Even if your symptoms are mild, you may still be contagious and able to infect others. This is one reason testing and staying home when sick remain important during COVID-19 reinfection.
You can help prevent spreading the virus by:
- Staying home when you have symptoms
- Wearing a well-fitting mask around others if you must go out
- Avoiding close contact with vulnerable people
- Improving ventilation indoors
- Following current public health guidance
Why reinfection happens
Reinfection can happen because immunity is not permanent. After infection, the body does build protection, but that protection can weaken over time. Also, the virus changes, and some variants can partially evade immunity from prior infection or vaccination.
This means the immune system may still help reduce severity, but it may not stop infection completely. COVID-19 reinfection is a reminder that immunity can reduce risk without eliminating it.
Who is most at risk of getting COVID-19 again?
Anyone can get reinfected, but the risk may be higher for people who:
- Spend time in crowded or poorly ventilated places
- Work in healthcare, schools, or other high-exposure settings
- Have weakened immune systems
- Are not vaccinated or not up to date on COVID-19 vaccines
- Had their last infection a long time ago
- Live with or care for high-risk individuals
For these groups, COVID-19 reinfection can be more than an inconvenience because the consequences may be more serious.
Are vaccines still important if you already had COVID-19?
Yes. Vaccination remains important even after infection. Getting vaccinated after recovery can strengthen and broaden protection, lowering the risk of severe illness, hospitalization, and death.
Natural infection alone may not provide consistent or lasting protection, especially against newer variants. Current COVID-19 vaccines are designed to offer updated protection and are an important layer of defense. The CDC also explains how vaccination guidance continues to evolve on its official COVID-19 vaccines page.
For many people, vaccination is still one of the best ways to reduce the odds that a future COVID-19 reinfection becomes a serious illness.
What should you do if you think you have COVID-19 again?
If you think you may be reinfected:
- Test for COVID-19
Use an at-home test or get tested at a clinic if available. - Stay away from others
Avoid school, work, and social events while you are sick. - Rest and hydrate
Support your recovery with fluids, rest, and fever-reducing medicine if appropriate. - Watch for warning signs
Seek medical help if symptoms worsen or you have trouble breathing, chest pain, confusion, or bluish lips or face. - Protect people around you
If you must be near others, wear a high-quality mask and limit close contact.
If you are unsure whether the illness is a new infection or lingering symptoms, testing and medical advice can help clarify the situation. COVID-19 reinfection can be easier to miss when symptoms are mild.
When should you call a doctor?
Contact a healthcare professional if you:
- Have symptoms that are getting worse
- Are at high risk for severe COVID-19
- Are having trouble breathing
- Have a persistent high fever
- Have chest pain or pressure
- Feel confused or unusually weak
- Need guidance about antiviral treatment
Early treatment may help some people at higher risk, so do not wait if you are concerned. If COVID-19 reinfection is possible, getting medical advice early can matter.
How to lower your risk of getting COVID-19 again
There is no way to eliminate risk completely, but you can reduce it with practical steps:
- Stay up to date on COVID-19 vaccines
- Wash your hands regularly
- Improve indoor ventilation
- Wear a well-fitting mask in crowded or high-risk settings
- Avoid close contact with sick people
- Test if you develop symptoms
- Stay home when you are ill
These steps are especially important during waves of increased COVID-19 spread. Even after one infection, COVID-19 reinfection can still happen, so prevention remains useful.
Common questions about COVID-19 reinfection
Is reinfection rare?
No. Reinfection is not rare, especially as variants change and immunity fades over time.
Does a positive test mean it is a new infection?
Not always. Some people can continue to test positive for a period after recovery. However, if you had recovered and then later developed new symptoms or had a new exposure, reinfection is possible.
Can you get a different variant after having COVID-19?
Yes. You can be infected with a different variant after a previous infection, and prior immunity may not fully protect you.
If I had COVID-19 recently, do I still need to test?
If you develop new symptoms or have been exposed again, testing can still be useful. Timing matters, so repeat testing may be needed if the first test is negative.
The bottom line
Yes, you can get COVID-19 again. A previous infection can reduce the risk of severe illness, but it does not provide guaranteed or permanent protection. COVID-19 reinfection is possible, especially as the virus evolves and immunity changes over time.
The best way to protect yourself is to stay informed, test when symptoms appear, and keep up with vaccines and prevention steps. If you think you may be reinfected and you are at higher risk for complications, contact a healthcare professional promptly.
