To understand the importance of the three ducks and the virus they carry, we need to move quickly through the Flu school. Lesson One: The family type of influenza is large and widespread; consists of colors — A, B, C, D — and subgroups, labeled Hs and Ns. (They are a summary of proteins that allow the virus to infect cells.) Within As, there are about 200 subtypes; few affect humans, but almost all can transmit birds.
Lesson 2: For a long time, scientists thought people were less vulnerable to all other types of colds. That idea was shattered in 1997, when an avian flu, H5N1, invaded Hong Kong and killed 18 people, killing six of them. To shut it down, the local government killed every chicken in the area, denying that the virus was found. This was in operation for a number of years, but in 2003 the H5N1 resumed worldwide operations, and has been operating ever since.
Lesson 3: Bird flu can be dangerous to humans, but it also threatens other birds. Waterfowl, especially ducks, carry without disease, but they do infect chickens. Here are some small groups: Bird flu can be very small, meaning it makes the bird less sick and reduces egg production. Or it could be a highly contagious disease, or a major cause: a highly contagious disease that can kill an entire flock in two days. (A well-known poultry researcher once called it the “Ebola chicken.”)
To sum up all that (there will be no questions): The flu that is found in the Carolinas is H5N1, meaning that it is a small group that infects birds but in the past infects humans. It is a very advanced method, which can eradicate domestic animals. It is the first of its kind in the eclipse of biodiversity in 1997. And, to make matters worse, it represents just one part of the H5N1 spectacular display currently occurring in the world.
Last year, the World Organization for Animal Health (known by its French words, OIE) to compare that between May 1 and November 1, 41 countries experienced bird flu outbreaks, with 16,000 isolation cases reported in October alone. Fifteen countries also reported the epidemic between October and December.
Temporary isolation of the bird flu is not uncommon, but the last drop of H5N1 began to erupt in the United Kingdom with astonishing intensity. From October and in this year, the virus is found in wildlife, such as swans, geese, seabirds, and carnivorous birds. But it has also penetrated poultry farms, especially in Lincolnshire and Yorkshire. By January, more than 1 million chickens and some birds had been destroyed to prevent them from spreading. In December, the UK’s top veterinarian reported the occurrence of bird flu there “.wonderful, ”Says the problem has spread to unprecedented farm areas.
At about the same time, Dutch officials were ordering his execution Hundreds of thousands of chickens are farmed in the country. In the Czech Republic, more 100,000 chickens died of bird flu on an egg farm, and another 100,000 birds and about 1 million eggs were destroyed to prevent the virus from spreading further. In France, farmers fear that the virus will invade the southwest, the foie gras house. Last week, the agriculture ministry ordered the killing of 2.5 million birds. In Italy, more than 4 million chickens died or were killed between October and December. And the Friedrich Loeffler Institute, an animal disease research institute in the German government, announced in late December that Europe. it was meeting “The flu pandemic was worse than ever,” and the epidemic reached as far north as the Faroe Islands and as far south as Portugal.
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