H3N8 bird flu: Mode of transmission and prevention measures

Previously touched the dogs, birdseals and horses, H3N8 . virus Avian influenza was detected in humans for the first time. It is a four-year-old child, living in Hena province, China. He tested positive after being hospitalized because fever and some symptoms. What are the transmission risks and symptoms of avian influenza H3N8?

H3N8 bird flu: What is it?

H3N8 is a strain of virus Avian flu or influenza A. This virus is only affected animalsespecially dogthe horse as pinnipeds (seals, walruses and sea lions).

Avian influenza, on the other hand, is a disease of animal origin caused by influenza A virus strain. According to the Pasteur Institute, bird flu is more common in domesticated poultry species (chickens, geese, etc.) and the mortality rate in them is high.

H3N8 bird flu: What is the mode of transmission?

The avian influenza H3N8 was first detected in a four-year-old child, who presented with fever and other symptoms on April 5, 2022. He was subsequently hospitalized on the 10th of the same month, due to his health condition that day. the worse. The announcement of this first human case was announced by the Chinese government on April 26, 2022.

Indeed, the parents of the child who tested positive for the H3N8 strain raised chickens, and they lived in an area marked by human settlement. wild duck. Furthermore, according to a study from 1997, the H3N8 subtype is responsible for 26% of infections. flu with mallard. This means that the child lived near the chickens and crows that his parents raised. Therefore, he may have contracted the H3N8 virus after coming into contact with a sick animal.

The Chinese authorities have pointed out that risk of virus transmission among men is very low, as tests performed on the child’s relatives showed “no abnormalities”. However, they do not recommend living near sick or dead birds.

Note, however, that not all viruses associated with avian influenza are transmissible to humans. Of the 144 strains of avian influenza A virus, only four (H7N3, H7N7, H5N1 and H9N2) cause human infection To the present time. However, according to the Pasteur Institute, the spread of infection in birds increases the risk of a new strain of bacteria appearing in humans.

What are the symptoms of H3N8 bird flu?

Symptoms may suggest a avian influenza H3N8 in a human being:

In the case of a 4-year-old child, the signs that led to hospitalization were fever and other symptoms, according to China’s Ministry of Health, which did not provide full details on the case.

Bird flu in humans: What to watch out for?

Firstly, do not get close to the birds, regarding the precautions taken when avian influenza H3N8. In the event that happens fever or some respiratory symptomsa consultation must be carried out by the sick person.

For the Pasteur Institute, it is necessary respect the barrier gesture (mainly wash hands and wear protective masks). In France, to avoid hypothetical contagion, the first security measure would be remove all poultry tanks that could accelerate the spread of the epidemic.

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