In addition to other symptoms (like fever, dry cough, and shortness of breath), stomach upset can be a hallmark sign of COVID-19. A recent study showed that 1 in 5 people who tested positive for COVID-19 had at least one gastrointestinal symptom, such as diarrhea, vomiting, or belly pain.

What are the organs most affected by COVID‐19?

The lungs are the organs most affected by COVID‐19

What are some of the most common symptoms of the COVID-19 Delta variant?

Cough, fatigue, headache and loss of taste and/or smell continue to be the most commonly reported symptoms in those testing positive.

What are some of the symptoms of the Omicron variant?

New variant symptoms Fatigue and dizziness are some of the initial symptoms, followed by headaches, sore throat, muscle soreness and fever. But the most common symptoms of coronavirus such as the loss of smell and taste are rarely reported in people affected with the new Omicron variant.

Can you get COVID-19 more than once?

Yes, it is possible to get Covid-19 two, three or even more times. As new variants have emerged, and immunity from previous infection and immunisation has reduced over time, reinfection with Covid-19 has become increasingly common.

41 related questions found

Can you still catch COVID-19 after having the booster vaccine?


Can you still catch COVID-19 after having the vaccine? The COVID-19 vaccination will reduce the chance of you suffering from COVID-19. It may take a few days for your body to build up some protection from the booster.

Can you still get Covid after vaccine?

Like all medicines, no vaccine is completely effective, so you should continue to take recommended precautions to avoid infection. Some people may still get COVID-19 despite having a vaccination, but this should be less severe.

What are the common side effects of the COVID-19 vaccine?


Common side effects

  • having a painful, heavy feeling and tenderness in the arm where you had your injection. This tends to be worst around 1 to 2 days after the vaccination
  • feeling tired
  • headache
  • general aches, or mild flu like symptoms

What are the most common adverse reactions to the covid-19 vaccine?

The most frequent adverse reactions in trials were pain at the injection site, fatigue, headache, myalgia (muscle pains), chills, arthralgia (joint pains), and fever; these were each reported in more than 1 in 10 people.

What are the possible side effects of the BNT162b2 COVID-19 vaccine?

The most common side effects with BNT162b2 (which may affect more than 1 in 10 people) were pain at the injection site, tiredness, headache, muscle pain, chills, joint pain and fever.

What are some of the symptoms of COVID-19?

Most common symptoms:

fever
cough
tiredness
loss of taste or smell.
Less common symptoms:

sore throat
headache
aches and pains
diarrhoea
a rash on skin, or discolouration of fingers or toes
red or irritated eyes.

What are the common side effects of the Astra Zeneca COVID-19 vaccine?


The most frequently reported adverse reactions are injection site tenderness (68%), injection site pain (58%), headache (53%), fatigue (53%), myalgia (44%), malaise (44%), pyrexia (includes feverishness (33%) and fever ≥38°C (8%)), chills (32%), arthralgia (27%) and nausea (22%).

The majority of these adverse reactions were mild to moderate in severity and usually resolved within a few days of vaccination. Very rare cases of thrombosis with thrombocytopenia syndrome have been reported post-marketing within the first three weeks following vaccination (see section 4.4).

How long after having COVID-19 can I get the spring booster vaccine?


If you are unwell, wait until you have recovered to have your vaccine. If you have had confirmed COVID-19 you should ideally wait 4 weeks before having your spring booster.

What are the complications of COVID-19?

Complications may include pneumonia, acute respiratory distress syndrome (ARDS), multi-organ failure, septic shock, and death.

Who are at higher risk of developing serious illness from COVID-19?

Older people, and those with underlying medical problems like cardiovascular disease, diabetes, chronic respiratory disease, and cancer are more likely to develop serious illness.

In what conditions does COVID-19 survive the longest?

Coronaviruses die very quickly when exposed to the UV light in sunlight. Like other enveloped viruses, SARS-CoV-2 survives longest when the temperature is at room temperature or lower, and when the relative humidity is low (<50%).

What are some common side effects of the COVID-19 vaccine in children?

Common side effects their arm feeling heavy or sore where they had the injection feeling achy or like they have the flu feeling tired having a headache

Can you take the COVID-19 vaccine if you have allergies?

Most people with allergies (including food or penicillin allergies) can be vaccinated against COVID-19.

Tell healthcare staff before you're vaccinated if you've ever had a serious allergic reaction (including anaphylaxis). They may ask what you're allergic to, to make sure you can have the vaccine.

Can the COVID-19 vaccine affect your ability to drive and use machines?

Driving and using machines

COVID-19 mRNA Vaccine BNT162b2 has no or negligible influence on the ability to drive and use machines. However, some of the effects mentioned under section 4 'Possible side effects' may temporarily affect the ability to drive or use machines.

Can you get a fever or temperature after the COVID-19 vaccine?

Although a fever can occur within a day or two of vaccination, if you have any other COVID-19 symptoms or your fever lasts longer, stay at home and arrange to have a test.

Is the COVID-19 vaccine safe?


The MHRA confirmed on 9 September 2021 that the COVID-19 vaccines made by Pfizer and AstraZeneca can be used as safe and effective booster doses. Following review of data for the COVID-19 Vaccine Moderna vaccine, the MHRA and CHM experts also concluded that this vaccine can be used as a safe and effective booster dose.

All vaccines and medicines have some side effects. These side effects need to be continuously balanced against the expected benefits in preventing illness. The COVID-19 Pfizer/BioNTech Vaccine was evaluated in clinical trials involving more than 44,000 participants. The most frequent adverse reactions in these trials

Can you go back to daily activities after having your COVID-19 vaccine?

You should be able to resume activities that are normal for you as long as you feel well. If your arm is particularly sore, you may find heavy lifting difficult. If you feel unwell or very tired you should rest and avoid operating machinery or driving.

Can I develop immunity to COVID-19 after testing positive for PCR?

If you have previously tested positive for COVID-19, you will probably have developed some immunity to the disease. However, it cannot be guaranteed that everyone will develop immunity, or how long it will last. It is possible for PCR tests to remain positive for some time after COVID-19 infection.

How do we achieve herd immunity against COVID-19?

To safely achieve herd immunity against COVID-19, a substantial proportion of a population would need to be vaccinated, lowering the overall amount of virus able to spread in the whole population.

Does BCG vaccine protect you from getting the coronavirus disease?

There is no evidence that the Bacille Calmette-Guérin vaccine (BCG) protects people against infection with COVID-19 virus. Two clinical trials addressing this question are underway, and WHO will evaluate the evidence when it is available. In the absence of evidence, WHO does not recommend BCG vaccination for the prevention of COVID-19. WHO continues to recommend neonatal BCG vaccination in countries or settings with a high incidence of tuberculosis.