Enter the peak of summer!The latest reminder of Jiangsu Disease Control and Control →

Influenza monitoring data of Jiangsu Province shows that in the specimen of the upper respiratory infection collected by the sentry hospital, the positive rate of influenza nucleic acid has risen for 6 consecutive weeks. Most of the influenza positive strains are H3N2 subtypes. It is expected that the intensity of the influenza activity will remain at a high position in the near future.

What is the peak in summer?

Including the provinces in the middle latitude, including Jiangsu, the influenza fashion mode is usually distributed in double peaks: summer peaks and winter and spring peaks. Summer peaks do not appear every year, mainly consisting of H3N2 subtypes; the peaks of the winter and spring season appear almost every year, alternate or popular by four subtypes (H1N1, H3N2, Victoria, and YAMAGATA).

Recent influenza monitoring data shows that Jiangsu influenza has entered the peak of summer. According to historical monitoring data, the summer peaks in Jiangsu lasted about a month, and the summer summit led by H3N2 gradually decreased. However, after the winter and spring, about November to December, the intensity of the influenza activity will once again enters the peak of popularity in winter and spring.

Summer Peak

What is the difference between the peaks of popularity in winter and spring?

1. Differences of epidemic strains: Affected by factors such as external environmental meteorological factors, host immune levels, and virus themselves, summer pop peaks are composed of H3N2, and summer peaks will not appear every year; popular peaks in winter and spring will appear almost every year ( In the winter and spring of 2020 to 2021, due to the popularity of the new crown, the influenza has not appeared in winter and spring peaks). Compared with the peaks of the summer, the types of superior strains are relatively more types of poison strains and higher popularity.

2. Differences on the clustering epidemic: The occurrence of influenza summer peaks is mostly in the hot summer, and the susceptible people such as primary and secondary school students are in the summer. Although the influenza virus activity is high, the number of clustering epidemic caused by the summer peaks is relatively small. This is also one of the reasons why Summer Fengfeng has not attracted social attention before.

How to prevent it?

1. Develop good personal hygiene habits. Washing your hands frequently, avoid touching your eyes (such as rubbing your eyes), nose (such as digging your nose), and oral cavity. Pay attention to cough etiquette (cover your upper arm or cover your nose with a tissue when coughing).

2. Keep environmental ventilation. Recently, the weather is hot, and the indoor air conditioner should pay attention to open the window to ventilate regularly. It is recommended to be less than 30 minutes at each ventilation time.

3. Recently, during the high incidence of influenza, try to go to the closure places (swimming pools, theaters, shopping malls, etc.) as few as possible. One -time medical mask), the mask should cover the nose and mouth at the same time.

4. Vaccine. Vaccination of flu vaccines is the most effective means to prevent influenza, especially for key groups such as children, elderly people, and medical staff, and should be vaccinated in time without taboos.

Prevent summer flu,

Is it too late to get vaccine now?

The evidence of clinical trials indicates that the antibody reaches a protective level 2-4 weeks after vaccination, and the protective effect of the original strain-like strain can be maintained for 6-8 months.

According to historical monitoring data, the peak of summer influenza will fall in a few weeks and fall to the low level of popularity in September to October. Therefore, vaccination is not good for preventing the influenza in this round of summer. However, because our province was in 2020 After the new crown epidemic, the flu is relatively low for a long time. In addition, the influenza vaccination rate is not high, resulting in a low level of immunity in the population. It is expected that the risk of influenza popularity is high in the winter and spring of this winter. Key people, medical staff and other key groups have completed the flu vaccination before the winter and spring peaks.

Source: Jiangsu Disease Control

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