COVID-19 is a disease caused by a virus called SARS-CoV-2. Most people with COVID-19 have mild symptoms, but some people can become severely ill. Although most people with COVID-19 get better within weeks of illness, some people experience post-COVID conditions. Post-COVID conditions are a wide range of new, returning, or ongoing health problems people can experience more than four weeks after first being infected with the virus that causes COVID-19. Older people and those who have certain underlying medical conditions are more likely to get severely ill from COVID-19.

Signs and symptoms of Covid 19:

People with COVID-19 have had a wide range of symptoms reported – ranging from mild symptoms to severe illness. Symptoms may appear 2-14 days after exposure to the virus. Anyone can have mild to severe symptoms. People with these symptoms may have COVID-19:

• Fever or chills
• Cough
• Shortness of breath or difficulty breathing
• Fatigue
• Muscle or body aches
• Headache
• New loss of taste or smell
• Sore throat
• Congestion or runny nose
• Nausea or vomiting
• Diarrhea

This list does not include all possible symptoms. Older adults and people who have severe underlying medical conditions like heart or lung disease or diabetes seem to be at higher risk for developing more serious complications from COVID-19 illness.

COVID-19 spreads when an infected person breathes out droplets and very small particles that contain the virus. These droplets and particles can be breathed in by other people or land on their eyes, noses, or mouth. In some circumstances, they may contaminate surfaces they touch. People who are closer than 6 feet from the infected person are most likely to get infected.

COVID-19 is spread in three main ways:

• Breathing in air when close to an infected person who is exhaling small droplets and particles that contain the virus.
• Having these small droplets and particles that contain virus land on the eyes, nose, or mouth, especially through splashes and sprays like a cough or sneeze.
• Touching eyes, nose, or mouth with hands that have the virus on them.

For more information about how COVID-19 spreads, visit the How COVID-19 Spreads page to learn how COVID-19 spreads and how to protect yourself. 

Wear a mask

• If you are not fully vaccinated and aged 2 or older, you should wear a mask in indoor public places.
• In general, you do not need to wear a mask in outdoor settings.
  • In areas with high numbers of COVID-19 cases, consider wearing a mask in crowded outdoor settings and for activities with close contact with others who are not fully vaccinated.
• People who have a condition or are taking medications that weaken their immune system may not be fully protected even if they are fully vaccinated. They should continue to take all precautions recommended for unvaccinated people, including wearing a well-fitted mask until advised otherwise by their healthcare provider.
• If you are fully vaccinated, to maximize protection from the Delta variant and prevent possibly spreading it to others, wear a mask indoors in public if you are in an area of substantial or high transmission.

Wearing a mask over your nose and mouth is required on planes, buses, trains, and other forms of public transportation traveling into, within, or out of the United States and while indoors at U.S. transportation hubs such as airports and stations. Travelers are not required to wear a mask in outdoor areas of a conveyance (like on open deck areas of a ferry or the uncovered top deck of a bus). Stay 6 feet away from others

• Inside your home: Avoid close contact with people who are sick.
  • If possible, maintain 6 feet between the person who is sick and other household members.
• Outside your home: Put 6 feet of distance between yourself and people who don’t live in your household.

Avoid crowds and poorly ventilated spaces Being in crowds like in restaurants, bars, fitness centers, or movie theaters puts you at higher risk for COVID-19. Avoid indoor spaces that do not offer fresh air from the outdoors as much as possible. If indoors, bring in fresh air by opening windows and doors, if possible. Wash your hands often

• Wash your hands often with soap and water for at least 20 seconds especially after you have been in a public place, or after blowing your nose, coughing, or sneezing.
• It’s especially important to wash:
  • Before eating or preparing food
  • Before touching your face
  • After using the restroom
  • After leaving a public place
  • After blowing your nose, coughing, or sneezing
  • After handling your mask
  • After changing a diaper
  • After caring for someone sick
  • After touching animals or pets
• If soap and water are not readily available, use a hand sanitizer that contains at least 60% alcohol. Cover all surfaces of your hands and rub them together until they feel dry.
• Avoid touching your eyes, nose, and mouth with unwashed hands.

Cover coughs and sneezes

• If you are wearing a mask: You can cough or sneeze into your mask. Put on a new, clean mask as soon as possible and wash your hands.

• If you are not wearing a mask:
  • Always cover your mouth and nose with a tissue when you cough or sneeze, or use the inside of your elbow and do not spit.
  • Throw used tissues in the trash.
• Immediately wash your hands with soap and water for at least 20 seconds. If soap and water are not readily available, clean your hands with a hand sanitizer that contains at least 60% alcohol

Clean and disinfect Clean high-touch surfaces daily. This includes tables, doorknobs, light switches, countertops, handles, desks, phones, keyboards, toilets, faucets, and sinks. If someone is sick or has tested positive for COVID-19, disinfect frequently touched surfaces. Use a household disinfectant product from EPA’s List N: Disinfectants for Coronavirus (COVID-19) external icon according to manufacturer’s labeled directions. If surfaces are dirty, clean them using detergent or soap and water prior to disinfection.

If you have a fever, cough, or other symptoms, you might have COVID-19. Most people have mild illnesses and are able to recover at home. If you are sick:

Keep track of your symptoms.

If you have an emergency warning sign (including trouble breathing), call 911.

When to seek emergency medical attention

Look for emergency warning signs for COVID-19. If someone is showing any of these signs, seek emergency medical care immediately:

• Trouble breathing
• Persistent pain or pressure in the chest
• New confusion
• Inability to wake or stay awake
• Pale, gray, or blue-colored skin, lips, or nail beds, depending on skin tone
• This list is not all possible symptoms. Please call your medical provider for any other symptoms that are severe or concerning to you.

Call 911 or call ahead to your local emergency facility: Notify the operator that you are seeking care for someone who has or may have COVID-19.