Global Statistics

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Updated on August 12, 2022 5:08 am
All countries
Updated on August 12, 2022 5:08 am
All countries
Updated on August 12, 2022 5:08 am

Global Statistics

All countries
Updated on August 12, 2022 5:08 am
All countries
Updated on August 12, 2022 5:08 am
All countries
Updated on August 12, 2022 5:08 am
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How Long Does It Take For Covid To Show Symptoms

What Is Being Done To Help Covid

How to Recover from Covid Brain | Dr. Daniel Amen

As with many other COVID-19 issues, its hard to identify why something is occurring when the disease was discovered relatively recently. Learning how to treat long haulers also requires time.

Also, because the disease is so new, much of the information about COVID-19 cases and care is anecdotal. However, that is changing.

UC Davis Health launched the regions first Post-COVID-19 Clinic to provide streamlined, comprehensive specialty care for long haulers. We are one of only a handful of health systems in the U.S. to create a clinic that cares for these patients.

If You Are Up To Date On Your Covid

According to the CDC, if youve been exposed to COVID-19 and youre up to date on your COVID-19 vaccinations, youll need to:

  • Get tested. You dont need to quarantine, but make sure you test yourself at least 5 days after you were exposed.
  • Watch for symptoms. Even if you test negative, pay attention to the development of any symptoms for the next 10 days. If you develop symptoms, isolate yourself right away, and get tested again.
  • Avoid high risk individuals for 10 days. Try to stay away from people who are at high risk for at least 10 days.
  • Take precautions if you need to travel. Wear a mask at all times and keep your distance from others as much as possible.

Its also important to get tested if youve:

  • attended a crowded event, like a concert
  • traveled
  • developed COVID-19 symptoms

Its crucial to note that the coronavirus may not cause symptoms in some people. You should still get tested 5 days after an exposure, even if you have no symptoms.

  • pain or pressure in the chest

The best way to avoid severe COVID-19 symptoms and complications is to get vaccinated.

How Soon After Exposure Can Covid Symptoms Show

People who catch Covid can begin to show symptoms anywhere from two days to two weeks after being infected.

It is thought that people who caught earlier variants of Covid, would start showing symptoms in around five days, while people who caught the Delta variant would show symptoms within four days.

However, it is thought that people infected with the Omicron variant will show symptoms even sooner, with some people displaying around three days after being infected, according to Harvard Medical School.

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How Long Does It Take For Covid Symptoms To Show

As Boris Johnson refuses to rule out another lockdown in the UK, the public may want to think about how they can avoid spreading Covid.

Although testing in England is no longer free, taking a lateral flow test when you have Covid symptoms can still be a way to ensure that you dont spread the virus to others.

The Covid symptoms you experience may vary depending on the variant youve caught.

But the amount of time it takes for your symptoms to show up can also vary depending on the variant, as well as varying from person to person.

Some people, of course, may never show symptoms at all.

So how long does it take for Covid symptoms to show up after being infected?

What Is Contact Tracing

How long does it take for COVID

Contact tracing is a method thats used to help slow the spread of infectious diseases like COVID-19. It involves identifying close contacts of people with confirmed COVID-19 and notifying them of a potential exposure.

If your community is using contact tracing, a public health worker called a contact tracer may contact you to inform you that a close contact has tested positive for COVID-19. This individual can also explain next steps, including testing and quarantine.

Any conversation with a contact tracer remains confidential. A contact tracer will keep your personal and medical information private. Theyll also never ask you for things like your Social Security number, bank account information, or credit card number.

Even if contact tracing is being used in your area, if you do contract COVID-19, its important to let your close contacts know as soon as possible. That way, they can plan to get tested and quarantine, if necessary.

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If You’ve Been Exposed Are Sick Or Are Caring For Someone With Covid

If you’ve been exposed to someone with COVID-19 or begin to experience symptoms of the disease, you may be asked to self-quarantine or self-isolate. What does that entail, and what can you do to prepare yourself for an extended stay at home? How soon after you’re infected will you start to be contagious? And what can you do to prevent others in your household from getting sick?

Visit our Coronavirus Resource Center for more information on coronavirus and COVID-19.

Can I Get Or Spread Covid

When you get a COVID-19 vaccine, it teaches your immune system to recognize the virus as a foreign element and fight it. Studies show that COVID-19 vaccines can greatly reduce your chances of getting infected with the virus. But if you do catch it after youre vaccinated, the vaccine will still protect you from getting as seriously ill or needing hospitalization.

Its important to note that youre not optimally protected until 2 weeks after you get your second dose of a two-shot vaccine. Thats because it takes around 2 weeks for your body to build protection against the SARS-CoV-2 virus. And because the incubation period is shorter than the wait time between doses, its possible to catch COVID-19 before or just after your vaccination, since your body has not had enough time to build immunity. If this happens, the CDC recommends waiting until youve fully recovered to get the vaccine.


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How Long Someone Can Spread The Virus


For both COVID-19 and flu, its possible to spread the virus for at least 1 day before experiencing any symptoms.


If a person has COVID-19, they could be contagious for a longer time than if they had flu.

Most people with flu are contagious for about 1 day before they show symptoms.

Older children and adults with flu appear to be most contagious during the initial 3-4 days of their illness but many people remain contagious for about 7 days.

Infants and people with weakened immune systems can be contagious for even longer.


How long someone can spread the virus that causes COVID-19 is still under investigation.

Its possible for people to spread the virus for about 2 days before experiencing signs or symptoms and remain contagious for at least 10 days after signs or symptoms first appeared. If someone is asymptomatic or their symptoms go away, its possible to remain contagious for at least 10 days after testing positive for COVID-19. People who are hospitalized with severe disease and people with weakened immune systems can be contagious for 20 days or longer.

When And How Often To Take A Covid

Covid 19 Symptoms Day by Day

Like the previous Omicron variant, BA.2 moves fast and people who do develop symptoms, may start feeling sick two to three days after an exposure to the coronavirus, said Aubree Gordon, an epidemiologist at the University of Michigan. Some of the early symptoms may be very similar to a cold or flu, and include a sore throat, nasal congestion, cough or fever. Some people also report a loss of taste or smell, muscle aches, headaches, gastrointestinal issues and skin rashes. I would definitely test as soon as I had any symptoms, Dr. Gordon said.

If you use a home test and get a negative result, you should continue taking precautions and test again 24 to 48 hours later, Dr. Gordon said. It could be that the virus simply hasnt ramped up to levels detectable on a rapid test yet. If symptoms persist and you still test negative at home a few days later, you may want to get a lab-based P.C.R. test, which is more sensitive at detecting traces of the coronavirus.

Even if youre already vaccinated and boosted, your protective antibodies can wane over time, making you vulnerable to an infection. The Food and Drug Administration has authorized second boosters for older adults and those with underlying medical conditions that put them at high risk for severe disease. And while a recent bout with Omicron may provide some immunity, it is possible to be reinfected with the new version.

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What If I Get Sick Or Test Positive While In Quarantine

Take extra safety measures if you think or know you have COVID, or if you test positive for the virus but don’t have symptoms. Isolate yourself from other people in your home. Choose a sick room or separate area to stay in, and use a different bathroom if possible.

Officials recommend that you isolate at home for:

  • At least 10 days after your symptoms started
  • At least 24 hours since you’ve had a fever , along with an overall improvement in your symptoms

If you tested positive for COVID but dont have symptoms, officials recommend that you isolate at home until 10 days after your positive test result.


When Should You Get A Covid Test

Regardless of symptoms or vaccinations, those who are exposed to someone with coronavirus should get tested at least five days after their exposure.

Those who develop symptoms should get tested as symptoms develop, but if a test is negative and symptoms persist another test might be needed a few days later, particularly for those who use at-home test kits.

“So if someone is having symptoms and they get a negative test, one, it depends on the severity right? If you’re having severe symptoms we don’t want you to just do a home test either,” Dr. Nimmi Rajagopal, the associate chair of the Department of Family and Community Medicine for Cook County Health, told NBC 5 during the omicron surge late last year. “We want you to call your doctor’s office and make sure that they have an opinion here because there are of course other things like the flu that are out there that can mimic symptoms or have similar symptoms. But if you’re having symptoms and they’re kind of mild and lingering and you use the test and it’s negative, we want you to take the precautions and then retest in three to five days. And that’s why most of these kits actually come with two tests.”

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How Is Someone Tested For Covid

A specialized diagnostic test must be done to confirm that a person has an active coronavirus infection. Most often a clinician takes a swab of your nose . Some tests may be done using a saliva sample. The sample is then checked for the virus’s genetic material or for specific viral proteins .

Antibody tests can tell if someone has been infected with COVID-19. But the infected person doesn’t begin producing antibodies immediately. It can take as long as three weeks for a blood antibody test to turn positive. That’s why it is not useful as a diagnostic test for someone with new symptoms.

How Long Are You Contagious


It is believed people are at their most infectious one to two days before the onset of symptoms, and during the two to three days afterwards.

Health Secretary Sajid Javid said in December: Recent analysis from the UK Health Security Agency suggests that the window between infection and infectiousness may be shorter for the Omicron variant than the Delta variant.

Data shows that the majority of people are no longer infectious seven days after beginning to experience symptoms or first testing positive, particularly when vaccinated, and the vast majority are no longer infectious after 10 days.

It is worth noting that many people have reported experiencing different symptoms with Omicron than those most commonly associated with Covid-19 a cough, fever, shortness of breath and loss or change to taste and smell.

Among those symptoms are:

  • Scratchy throat
  • Runny nose

If you experience any of these symptoms you should take a lateral flow test, and you are advised to isolate if it is positive.

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What Should You Do If Youre Fully Vaccinated And Have Been Exposed To The Coronavirus

If youre fully vaccinated, you dont have to quarantine after being in close contact with someone with COVID-19 unless you develop symptoms. However, you should still:

  • Monitor yourself for symptoms of COVID-19.
  • Get tested 5 to 7 days after exposure.
  • Wear a mask while in indoor public spaces for 14 days or until your COVID-19 test comes back negative.

Its important that some people contact their doctor promptly if they believe that theyve been exposed to COVID-19, even if theyre fully vaccinated. These individuals include:

  • older adults
  • people with underlying health conditions that increase their risk of serious illness
  • those with a weakened immune system
  • pregnant people

There are treatments available, such as monoclonal antibodies, that can help prevent serious illness in higher risk individuals.

Why Do People Who Have Long Covid Continue To Experience Lasting Symptoms

Not a lot is known about people who have long COVID-19. The vast majority of long haulers test negative for the virus. Theres nothing specific to test for lasting coronavirus symptoms. It also doesn’t appear to be different in those who have different variants, like omicron or delta.

One common theory about patients with long COVID-19 symptoms is that the virus possibly remains in their bodies in some small form. Another theory is their immune systems continue to overreact even though the infection has passed.

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What Types Of Medications And Health Supplies Should I Have On Hand For An Extended Stay At Home

Try to stock at least a 30-day supply of any needed prescriptions. If your insurance permits 90-day refills, that’s even better. Make sure you also have over-the-counter medications and other health supplies on hand.

Medical and health supplies

  • prescribed medical supplies such as glucose and blood-pressure monitoring equipment
  • fever and pain medicine, such as acetaminophen
  • cough and cold medicines
  • soap and alcohol-based hand sanitizer
  • tissues, toilet paper, disposable diapers, tampons, sanitary napkins
  • garbage bags.

There Are Three Types Of Long Covid

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Long COVID can be broken down into three categories, Dr. Sanghavi explained. COVID-19 itself has direct cell damage because of the virus and this can cause lingering symptoms.

This means that people with COVID-19 do not recover completely and have ongoing symptoms because of direct cell damage from the virus, he said. Thats the first category.

The second category of long COVID is when a persons symptoms are related to chronic hospitalization, said Dr. Sanghavi. This is when someone is in the hospital, ICU, bed bound for weeks.

There is inherent muscle weakness. There is inherent cognitive brain dysfunction. There is inherent psychosocial stress causing post-traumatic stress disorder-like syndrome, which we call post-ICU care syndrome, he added. That is from chronic hospitalization.

In a third category are those cases in which symptoms appear after recovery.

With COVID itself you see a variety of symptomsa 30-year-old dying or a 70-year-old essentially being unscathed and symptomatic.

Thats because there are various patient factors at play, reflecting the interplay with the immune system of a person, and then the impact that both those things have on the body, he said. These symptoms that linger on are produced after the recovery because of this interplay between inflammatory markers and the immune system.

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How Long After Covid Exposure Could Symptoms Appear

According to the CDC, COVID symptoms can appear anywhere from two to 14 days after someone is exposed.

Stay informed during the severe weather season with our local news and weather app. Get the NBC 5 Chicago app for iOS or Androidand pick your alerts.

But guidelines state those who were exposed should watch for symptoms until at least 10 days after the last close contact with someone who had COVID.

The CDC says that its guidelines were updated to reflect growing evidence that suggests transmission of COVID-19 often occurs one to two days before the onset of symptoms and during the two to three days afterward.

Anyone with symptoms should get tested.

Can This Vary According To Variants

An article published by the US Harvard Medical School gives a more precise time period depending upon the variant.

It stated: The time from exposure to symptom onset is thought to be two to 14 days.

Symptoms typically appeared within five days for early variants, and within four days for the Delta variant.

The incubation period appears to be even shorter about three days for the Omicron variant.

The US Centre for Disease Control and Prevention said in December 2021 that new data appeared to show it may take only three days for people infected with the Omicron variant to exhibit symptoms.

Investigation by the CDC and Nebraska Health Department found the average incubation period was just 73 hours or about three days.

The CDC noted this was shorter than the approximate incubation periods of four days for the Delta variant and five days for other iterations of Covid-19.

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Which Symptoms Should You Watch For

As BA.2 cases continue their dominance across the Midwest and U.S., which symptoms should you watch for?

Northwestern’s Dr. Michael Angarone, an associate professor of medicine in infectious diseases, said the symptoms for BA.2 are similar to those seen in many COVID infections.

“So this is the same virus, so SARS Coronavirus 2, so we’re seeing the same symptoms,” he said.

Dr. Gregory Huhn, an infectious disease physician and the COVID-19 vaccine coordinator for Cook County Health, noted in March that while omicron led to more upper respiratory symptoms, it remains too early to tell if BA.2 will continue that trend.

“I don’t know if we, right now, know the particular features that are distinct for BA.2 versus BA.1. I mean, for BA.1, we knew that it was mostly an upper respiratory-type infection rather than the lower respiratory infections that can lead toward pneumonia and further and greater complications,” he said at the time.

Still, NBC News reported symptoms associated with BA.2 seem to largely mirror a small number of symptoms commonly reported in omicron infections. Those include:

  • Cough
  • Congestion
  • Runny Nose

Anecdotal reports have suggested that dizziness could be a possible symptom, but they are so far unfounded.

“When we are sick and our body is taking care of the infection, we can get things like fever,” Lee said. “If you have fever, in particular, and if you’re sweating a lot, you’re losing a lot of fluid.”

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