You're contagious with many viruses like the flu and common cold from about a day before symptoms start until several days after, generally most infectious in the first 3-4 days, and often need 24 hours fever-free (without meds) to be safe to return to normal activities, though you might still spread germs for up to 5-7 days or longer if immunocompromised.
When your symptoms are getting better overall and you have not had a fever (and are not using fever-reducing medication) for at least 24 hours, you are typically less contagious, but it still takes more time for your body to fully get rid of the virus.
You're infectious until all your symptoms have gone. This usually takes 1 to 2 weeks. It can be longer in babies and young children. Colds are spread by germs from coughs and sneezes, which can live on hands and surfaces for 24 hours.
You can be contagious for 1-2 days before symptoms appear and up to 8-10 days following symptom onset. You can spread the virus even if you do not have symptoms. Social distancing should continue until, for at least 24 hours, symptoms improve and you're fever-free without medications.
Good hygiene. Although chest infections generally aren't as contagious as other common infections, like flu, you can pass them on to others through coughing and sneezing. Therefore, it's important to cover your mouth when you cough or sneeze, and to wash your hands regularly.
Chronic bronchitis is generally not contagious. Acute bronchitis in people with chronic bronchitis is also less likely to be contagious.
Yes. While the presence of mucus may indicate an underlying issue, coughing up phlegm is a good thing because it helps clear irritants, allergens and infections out of your system.
The COVID virus has more success surviving on hard surfaces, such as glass and plastic, than on porous ones like bedding. Once the virus lands on a porous material like a fabric, the droplets evaporate much quicker than they do on a hard surface.
The symptoms are very similar to symptoms of other illnesses, such as colds and flu. Most people feel better within a few weeks, but it can take longer to recover. For some people, it can be a more serious illness and their symptoms can last longer.
Transmission of COVID-19 from inhalation of virus in the air can occur at distances greater than six feet. Particles from an infected person can move throughout an entire room or indoor space. The particles can also linger in the air after a person has left the room – they can remain airborne for hours in some cases.
Taking vitamin C every day to try to prevent colds won't protect most people from colds. It only slightly shortens the amount of time that they're ill. Starting to take vitamin C once you already have cold symptoms won't have any effect on your cold.
The best way to prevent catching a stomach bug: thorough hand washing. Everyone in your family should wash their hands with soap and water before eating and after using the bathroom. If you have an infant, be sure to follow proper handling and disposal of dirty diapers.
People with a respiratory virus should stay away from others until at least 24 hours after both symptoms are improving overall and they have not had a fever without the use of fever-reducing medication.
For as long as COVID-19 symptoms get worse, stay home and apart from people who don't have COVID-19. That will help stop the spread of the virus. People with weakened immune systems may need to stay apart, also called isolate, for longer. Your healthcare professional can advise you on what's best in your situation.
Antigen testing is recommended. If the result is negative, repeat testing should be done. You should NOT be retested if you tested positive for COVID within 30 days and do not have COVID symptoms.
Convalescence. The final stage of infection is known as convalescence. During this stage, symptoms resolve, and a person can return to their normal functions. Depending on the severity of the infection, some people may have permanent damage even after the infection resolves.
7 Steps to Take After a Virus Has Hit Your Home
The "worst days of COVID" vary for individuals (often peak illness days 5-10 for severe symptoms like shortness of breath, fatigue) and globally (major surges in 2020, winter 2021, Omicron waves in 2022-2023), marked by hospitalizations, deaths, and societal disruption, but the enduring struggle is "Long COVID" with persistent symptoms like extreme fatigue, brain fog, and heart issues, impacting daily life for months or years after the initial infection.
In accordance with guidance from the CDC, if you test positive for COVID-19 you should: Isolate for 5 days regardless of vaccination status. Only leave isolation after 5 days if you have no symptoms or your symptoms are improving, including at least 24 hours without a fever.
Use a portable air cleaner or air purifier if you have one
When used properly, air purifiers can help reduce airborne contaminants, including viruses, in a home or confined space.
Cleaning is an important first step to make sure you remove most germs from surfaces in your home. Using household cleaners that contain soap or detergent will remove germs and dirt on surfaces. Cleaning alone removes most harmful viruses or bacteria from surfaces.
Even people who are fully vaccinated and boosted should isolate if they have symptoms or test positive. Someone in isolation should: Sleep in a bedroom not used by anyone else. If that's not possible, try to keep as much of a distance as possible between beds.
To help remove mucus, focus on drinking plenty of fluids like water, herbal teas, and clear broths to thin it, plus try warm drinks with lemon and honey, and gargle with warm salt water; avoid dehydrating drinks like alcohol and excessive caffeine. Warm liquids are especially effective at soothing the throat and loosening congestion.
White phlegm with yellowish tint: It could be normal or signal an infection or inflammation. Yellow or dark yellow phlegm: It could mean a viral or bacterial infection or chronic inflammation. Green phlegm: It could mean a viral or bacterial infection or chronic inflammation. Pink phlegm: It could mean heart failure.