COVID-19 FAQ

Can I get COVID-19 again?

In general, reinfection is when a person becomes infected (sick) once, recovers, and then becomes infected again. Based on what we know about similar viruses, some reinfections are expected. We are still learning more about COVID-19.

Is it possible to get reinfected with COVID-19?

Although people with SARS-CoV-2 antibodies are largely protected, some people may become infected later due to lack of immunity to disinfection. Some people who are reinfected may have a similar ability to spread the virus as those who were first infected.

How long does COVID-19 immunity last?

To protect the global population from COVID-19, developing immunity against SARS-CoV-2 through natural infection or vaccination is critical. However, among those who recovered from COVID-19, a sharp decline in humoral immunity was observed 6 to 8 months after symptom onset.

What happens if someone who has recovered from COVID-19 has symptoms again?

If a previously infected person has recovered clinically but later develops symptoms suggestive of COVID-19 infection, they should be isolated and retested.

When can antibodies be detected after being infected with COVID-19?

After contracting the COVID-19 virus, it can take two to three weeks for enough antibodies to be produced to be detected on an antibody test, so it’s important not to test prematurely.

24 related questions found

How soon can COVID-19 antibodies be detected in a blood sample?

Antibodies may be detected in your blood for several months or more after you recover from COVID-19.

Does a positive antibody test mean I am immune to coronavirus disease?

A positive antibody test does not necessarily mean you are immune to SARS-CoV-2 infection, as it is not known whether having SARS-CoV-2 antibodies will protect you from reinfection.

How soon after recovery can a patient feel the effects of COVID-19?

Older adults and those with many serious medical conditions are most at risk of lingering symptoms of COVID-19, but even young, otherwise healthy people can feel ill for weeks to months after infection.

Can people who have recovered from COVID-19 become reinfected with SARS-CoV-2?

The CDC is aware of recent reports that people previously diagnosed with COVID-19 may become reinfected. These reports are understandably cause for concern. The immune response to SARS-CoV-2 infection, including the duration of immunity, is not known. Some reinfections are expected based on what we know from other viruses, including common human coronaviruses. Ongoing COVID-19 research will help determine the frequency and severity of reinfection and who may be at higher risk of reinfection. At this time, whether you have had COVID-19 or not, the best way to prevent infection is to wear a mask in public, stay at least 6 feet away from others, wash your hands often with soap and water for at least 20 seconds, and avoid crowds and narrow spaces space.

How soon can I be with other people after getting COVID-19?

You can be with other people when:

10 days after symptoms first appeared, and
No fever for 24 hours without the use of antipyretics,
Other symptoms of COVID-19 are improving*
*Loss of taste and smell after recovery may persist for weeks or months without delaying the end of quarantine​

How long do antibodies last after being infected with COVID-19?

In a new study published in the journal Nature Communications, researchers report that SARS-CoV-2 antibodies remain stable for at least seven months after infection.

How long do natural Covid antibodies last?

« Immunity conferred by natural infection appears to be strong and appears to be durable. We know it lasts at least six months, possibly longer, » the former FDA commissioner said on « Squawk Box. »

Do people develop COVID-19 antibodies after infection?

Most people who recover from COVID-19 develop antibodies against the virus.

How long do antibodies last after being infected with COVID-19?

In a new study published in the journal Nature Communications, researchers report that SARS-CoV-2 antibodies remain stable for at least seven months after infection.

What is the relationship between COVID-19 and SARS-CoV-2?

The novel coronavirus or SARS-CoV-2 is a deadly virus that can cause COVID-19.

Can a recovered person who tests persistently positive for COVID-19 infect others?

In some cases, people who have consistently or repeatedly tested positive for SARS-CoV-2 RNA have improved signs and symptoms of COVID-19. When virus isolation in tissue culture was attempted in these individuals in Korea and the United States, no live virus has been isolated. To date, there is no evidence that clinically recovered individuals with persistent or repeated detection of viral RNA have transmitted SARS-CoV-2 to others.

Despite these observations, it is impossible to conclude that all individuals with persistent or repeated detection of SARS-CoV-2 RNA are no longer infectious. There is no conclusive evidence that antibodies against SARS-CoV-2 infection are protective. If these antibodies are protective, it is unclear what antibody levels are needed to prevent reinfection.

How long do antibodies last after being infected with COVID-19?

In a new study published in the journal Nature Communications, researchers report that SARS-CoV-2 antibodies remain stable for at least seven months after infection.

What are the lingering side effects of COVID-19?

A full year has passed since the COVID-19 pandemic began, and the incredible consequences of the virus continue to confound doctors and scientists. Of particular concern to doctors and patients are the lingering side effects, such as memory loss, decreased concentration and the inability to think properly.

How long will the post-COVID situation last?

While most people with COVID-19 get better within a few weeks of getting sick, some people experience post-COVID-19 conditions. Post-COVID conditions are a series of new, recurring, or ongoing health problems that people may experience more than 4 weeks after they were first infected with the virus that causes COVID-19.

What are the long-term neurological side effects of COVID-19 after recovery?

Various neurological health complications have been shown to persist in some patients who have recovered from COVID-19. Some patients who recover from the disease may go on to experience neuropsychiatric problems, including fatigue, « brain fog » or confusion.

How does a person get COVID-19 antibodies?

Antibodies are proteins made by the immune system to fight infections such as viruses and may help prevent the same infection from occurring in the future. Antibodies can take days or weeks to form in the body after exposure to SARS-CoV-2 (COVID-19) infection, and it is unclear how long they stay in the blood.

What does a positive COVID-19 antibody test mean?

Antibody tests look for the presence of antibodies, which are our body’s response to infection. After vaccination, the COVID-19 antibody test will be positive. This does not mean you have active COVID-19.

What does a negative SARS-CoV-2 antibody test mean?

A negative SARS-CoV-2 antibody test result means no antibodies to the virus were detected in your sample. This could mean:
• You have not had COVID-19 before.
• You have been infected with COVID-19 in the past, but you do not have or have not developed detectable antibodies.

How long do antibodies last after being infected with COVID-19?

In a new study published in the journal Nature Communications, researchers report that SARS-CoV-2 antibodies remain stable for at least seven months after infection.

Can you test positive for COVID-19 antibodies if you have no symptoms?

• You can test positive for antibodies even if you have never had symptoms of COVID-19 or have not been vaccinated against COVID-19. This can happen if you have an infection without symptoms (called an asymptomatic infection).