Your infectious period The COVID-19 infectious period can vary, but most people are considered infectious from 48 hours before their symptoms start and can be infectious for up to 10 days.
A person with COVID-19 may be contagious 48 hours before starting to experience symptoms. In fact, people without symptoms may be more likely to spread the illness, because they are unlikely to be isolating and may not adopt behaviors designed to prevent spread.
According to the Centers for Disease Control and Prevention (CDC), COVID has a long incubation period of up to 10 days. On average, the time of exposure to active infection is typically five to six days, however it can be as short as three days with the new virus strain.
Your infectiousness is highest 1 day before the start of your symptoms and begins to wane about a week later for most people. The Omicron variant has a shorter incubation period, compared to other variants. For the Omicron variant, the incubation period is 1 to 4 days.
The COVID-19 infection period varies from person to person. Most people with COVID-19 will have a mild illness and will recover in a few days. Generally, people with COVID-19 are considered infectious from 48 hours before symptoms start.
You may need to get tested even if you do not have symptoms. You can have COVID-19 and spread it to others even if you do not have symptoms. Your COVID-19 test can be negative even if you are infected. Most people do not test positive for the virus until days after exposure.
Gradually build up exercise – seize the time when you are feeling less tired and go for a short walk – but you MUST still avoid any contact with others. However, at this stage lookout for breath related symptoms (see below what to look for).
Common Symptoms
Fever or chills. A dry cough and shortness of breath. Feeling very tired. Muscle or body aches.
BMJ: “Covid-19: Runny nose, headache, and fatigue are commonest symptoms of omicron, early data show.”
In infected individuals, the peak viral load occurred on day 5, with the virus first detected in the throat and then rising to significantly higher levels in the nose.
Symptom onset
The first symptoms of COVID-19 can be more gradual. While COVID-19 symptoms can develop as early as two days after you're infected, the Centers for Disease Control and Prevention (CDC) says five days after infection is typical.
People with moderate or severe COVID-19 should isolate through at least day 10. Those with severe COVID-19 may remain infectious beyond 10 days and may need to extend isolation for up to 20 days.
On June 30, the Centers for Disease Control and Prevention added three symptoms to its COVID-19 list: Congestion/stuffy nose, nausea and diarrhea. Those three new conditions now join other symptoms identified by the CDC: Fever.
A single negative test result is not completely reliable. If you have symptoms, stay at home until your symptoms have improved and you haven't had a fever for at least 24 hours. Repeat testing improves accuracy. If the first rapid self-test is negative, and you continue to have symptoms, do another test 48 hours later.
You can spread the common cold from a few days before your symptoms appear until all of the symptoms are gone. Most people will be contagious for up to 2 weeks. Symptoms are usually worse during the first 2 to 3 days, and this is when you're most likely to spread the virus.
How long do omicron symptoms last? Most people who test positive with any variant of COVID-19 typically experience some symptoms for a couple weeks. People who have long COVID-19 symptoms can experience health problems for four or more weeks after first being infected, according to the CDC.
You should also isolate if you are sick and suspect that you have COVID-19 but do not yet have test results. If your results are positive, follow the full isolation recommendations below. If your results are negative, you can end your isolation.
A person may have mild symptoms for about one week, then worsen rapidly. Let your doctor know if your symptoms quickly worsen over a short period of time.
Because COVID-19 is an illness caused by a virus, a COVID-19 sore throat may look and feel like other viral sore throats. One clue that you have viral pharyngitis is that it is often accompanied by other common symptoms.
When do omicron subvariant symptoms start? The time it takes for an infected person to develop symptoms after an exposure is shorter for the omicron variant than for previous variants — from a full week down to as little as three days or less, according to the Centers for Disease Control and Prevention.
Some people can test positive for COVID-19 for weeks or even months on PCR tests, but there is good news: people are not likely to be contagious for that long from a single infection, even if they test positive, and therefore are unlikely to transmit the virus to others.
You are considered contagious from two days before your symptoms begin until 10 days after your symptoms began. If you have no symptoms, you are considered contagious beginning two days before your test sample was collected and until 10 days after your test sample was collected.
This fits with early data from the U.K. showing that fever and cough are not as prevalent with omicron cases there and that the five top symptoms are runny nose, headache, fatigue, sneezing and sore throat. With omicron, the symptoms also come on more quickly once you're infected.
It can make you feel dull and tired, take away your energy, and eat away at your ability to get things done. Depending on the seriousness of your COVID-19 infection, it may last 2 to 3 weeks. But for some people with a severe infection, the brain fog-like fatigue and pain can linger for weeks or months.
The research shows that covid-19 headaches are most similar to either tension headaches or migraines. The symptoms of tension-like headaches include: Moderate or severe pain. Pain on both sides of the head.