- How long can you be asymptomatic with the flu?
- Why is the flu worse in winter?
- What viruses lay dormant in the body?
- Where do Flu viruses come from?
- How long can the flu virus lay dormant?
- Do viruses die or go dormant?
- Can you have the flu virus and be asymptomatic?
- Who gets the flu most often?
- How do viruses reactivate?
- How long is the flu contagious 2020?
- Which is worse flu A or B?
- Can you get the flu from being around someone who has it?
How long can you be asymptomatic with the flu?
For influenza, it’s one day before symptoms, and five to seven days after the onset of symptoms.
It can be as long as 10 days.
Young children and patients with altered immune symptoms can shed the virus for longer periods of time..
Why is the flu worse in winter?
The virus lives longer indoors in winter, because the air is less humid than outside. While it’s alive and in the air, it’s easy for people to inhale it, or for it to land on the eyes, nose, or mouth. We spend more time indoors and have closer contact with each other, which makes it easier for the virus to spread.
What viruses lay dormant in the body?
Dormant viruses are not new phenomena. Herpes viruses are often never fully eradicated from the body, and are instead subdued by the immune system. The herpes virus that causes chickenpox and shingles (VZV), for example, remains in our spinal cord cells for life.
Where do Flu viruses come from?
Answer: Influenza is a virus that’s spread from person to person. It originates, actually, among birds and other animals such as pigs, and new viral strains of influenza come to this country and to Europe from Southeast Asia.
How long can the flu virus lay dormant?
While the general incubation period for the flu is usually between one and four days, this period can vary from person to person. The average incubation period for the flu is two days . This means that, on average, people start to develop flu symptoms about two days after coming into contact with the influenza virus.
Do viruses die or go dormant?
When it reaches the neuron’s nucleus, it does not go through the same lytic infection cycle. Instead of replicating, it does something unusual – the virus goes dormant. This is called a latent infection.
Can you have the flu virus and be asymptomatic?
As many as 50% of infections with normal seasonal flu may be asymptomatic, which may in part be due to pre-existing partial immunity . Asymptomatic patients shed virus and can transmit the disease, but not at the same rate as symptomatic individuals, which creates an invisible “reservoir” for the virus.
Who gets the flu most often?
The same CID study found that children are most likely to get sick from flu and that people 65 and older are least likely to get sick from influenza. Median incidence values (or attack rate) by age group were 9.3% for children 0-17 years, 8.8% for adults 18-64 years, and 3.9% for adults 65 years and older.
How do viruses reactivate?
The genome of a virus that causes latent infection of cells must be transcribed and translated into viral proteins. This occurs when the virus is reactivated from a latent stage to a lytic stage. Certain viral genes that are specific to each virus initiate this reactivation process.
How long is the flu contagious 2020?
Adults are most contagious with the flu from 24 hours before symptoms start to three to five days afterward. Children can spread the virus for longer—up to 10 days, and sometimes even beyond that. People who have serious immune system problems can spread influenza for weeks, or even months, after they get it.
Which is worse flu A or B?
In the past, it was thought that infection with influenza A was more severe than infection with influenza B. However, a 2015 study in adults with influenza A and influenza B found they both resulted in similar rates of illness and death.
Can you get the flu from being around someone who has it?
People are much more likely to get infected with the flu from being around other sick people than they are from touching virus-laden surfaces. Person-to-person transmission of the flu can happen when an infected person is talking, coughing, sneezing, or even just breathing near someone else.