It is understood that after the deadly flu attack in Australia, the flu virus began to sweep the UK. It is understood that during the Christmas period, this deadly "Australian flu" was introduced to the United Kingdom, which has now infected 1,649 people, especially in the week after the deadly virus invasion, an increase of 1,111 people. According to doctors, the corridors of the hospital are slow flu patients, and they are all caused by deadly flu. It is reported that this deadly flu is called h3n2 influenza A. It is understood that this is a very powerful killing force and spread. The force is very fast.
Coincidentally, the flu should also be launched when it is hit by a deadly flu. The data shows that there have been more than 500 cases of influenza B.
For the flu, most of us are still clear. If we treat it in time, it will have little effect on the body, but if it is not treated in time, the harm is still very big. So how does the flu happen? What are the routes of transmission?
Source of infection
Influenza patients and people with latent infection are the main source of infection. It is contagious 1 to 7 days after the onset of the disease, and the most infectious is 2 to 3 days at the beginning of the disease. Animals such as pigs, cattle, and horses may spread the flu.
way for spreading
Airborne droplets are mainly transmitted, and the flu virus survives in the air for about half an hour.
Susceptible population
It is generally susceptible and has a certain immunity after illness. There is no cross-immunization between the three types of influenza and different subtypes of influenza A, and the disease can be repeated.
Popular feature
Suddenly, spread rapidly, reaching a peak in 2 to 3 weeks, the incidence rate is high, the epidemic period is short, about 6 to 8 weeks, often spread along the traffic line. General law: after the city, the rural areas, the first collective units, after the scattered residents.
Popular season
Influenza reaches the peak of the flu in winter and early spring, and because the winter time in the northern and southern hemispheres is different during the year (the northern hemisphere winter is from December to February, while the southern hemisphere is from June to August), the annual northern hemisphere is actually There is a different flu peak in the southern hemisphere.
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