On the 30th of October, the theme of "the new venomous strain of H3N2 comes to attack" sparked heated debate.
In autumn, the flu came again, and this time it was menacing.
According to the weekly influenza surveillance report released by the Chinese Center for Disease Control and Prevention, among the influenza virus positive samples detected in the 41st week (October 6 to October 12), A H3N2 strain has become mainstream。
The main strain circulating last year was 1, Switching to H3N2 this year means that the public's immunity to H3N2 is relatively low, and the number of infections may increase this year's flu season。
Virus "dress-up" returns
Who is H3N2?
H3N2 is not a new face, as early as 1968, it was the first mass outbreak in the name of "Hong Kong flu", affecting at least 55 countries and regions around the world. Since then, it has not disappeared, but as "seasonal new clothes", cyclical variation, rolling back, became a regular visitor of the flu season.
As a major influenza A virus, the typical symptoms caused by H3N2 include: high fever, sore throat, cough, and muscle and joint soreness throughout the body.
Its clinical manifestations are similar to those of other types of influenza A (such as H1N1), but it is more contagious and spreads faster.
Don't treat the flu as a cold
Separate these points.
Many people think that the flu is a "heavier cold". Can you take some medicine and have a rest?
(Source: CCTV News)
The case warning
Ms. Cheng, a 39-year-old from Hangzhou, Zhejiang, often stayed up late to work with her liver. After being diagnosed with the flu, she refused the doctor's suggestion of hospitalization and went home to "endure it" for three days. Several lobes of her lungs actually developed "white lung" symptoms...
What is the difference between the flu and the common cold?
Although both can cause respiratory symptoms such as cough and runny nose, the most prominent feature of influenza is that there are severe systemic symptoms:
- High fever: Body temperature can rapidly rise to 38.9 ° C ~ 40 ° C in the short term.
- Obvious pain: headache, sore throat, muscle soreness throughout the body.
- Extreme fatigue: A significant feeling of fatigue, affecting normal activities.
- Discomfort throughout the body: may be accompanied by gastrointestinal symptoms such as vomiting, diarrhea.
How to choose a flu vaccine?
Can patients with chronic diseases be vaccinated?
There are currently three types of flu vaccines available:
1. Inactivated (split) influenza virus vaccine (trivalent/tetravalent, injection)
Influenza virus sterilization (subunits) vaccine (three price / four price, injection)
3. Live attenuated influenza virus vaccine (trivalent, nasal spray)
After vaccination is vaccinated into the human body, it generally takes 2 weeks to produce protective effects.
The "price" of the vaccine represents the number of viral types covered, and the four-price of the three-price covers a strain of B-type influenza poison.
From the effect of preventing influenza A (including H3N2), there is no essential difference between trivalent and quadrivalent vaccines. Vaccination with trivalent vaccine can also provide effective protection.
The National Health and Medical Commission recommends that all people ≥ 6 months old and without vaccination contraindications should be vaccinated against influenza every year. The following key populations need priority vaccination:
Seniors aged 60 and over, chronic patients, pregnant women, infants and children over the age of June;
2, staff of key institutions or places, including medical institutions, pension institutions, nursing institutions, nursing institutions, welfare homes, and families of babies under 6 months.
- Parents are reminded that children under 5 years old are prone to high fever and serious complications after infection, so they should be highly vigilant. If persistent high fever (≥ 39 ℃ for more than 3 days or above 41 ℃) occurs, you must seek medical attention immediately.
Experts say that people with chronic diseases (such as cardiovascular diseases, tumor patients) can not only be vaccinated, but also the focus population that needs vaccination most!
Source: CCTV Finance, CCTV News