Health
Experts say there's no need to offer a bird flu vaccine for humans yet • Louisiana Illuminator
Infectious disease experts say the relatively mild cases of avian influenza detected so far among dairy workers may be due to vaccinations, even as they work to contain and prevent the spread of the contagious virus among herds. It states that there is no basis for making it available to them.
Dr. Sheila Doron, an epidemiologist and chief infection control officer at Tufts Medicine in Boston, said the spread of the H5N1 virus among humans is mild and no cases of human-to-human transmission have been reported, so vaccines are not recommended. He said widespread administration of the drug was premature at this point. .
“Also, distributing vaccines to farmworkers has many logistical challenges, including language barriers, undocumented status, and compliance, so this is not the plan at this time,” Doron said Friday morning. This was stated during a conference call of the Infectious Diseases Society of America. .
H5N1 has been circulating around the world for decades, she said. According to Delon, analysis of the currently circulating strains shows that these strains are not well suited for human-to-human transmission and have low potential for pandemics.
Human patients have also responded well to antiviral treatments such as Tamiflu, doctors said.
The current avian influenza strain has caused two severe cases in humans. One case involved a 65-year-old man from Louisiana who contracted the virus through exposure to a combination of non-commercial backyard flocks and wild birds, state health officials said. it was First case of death in Japan However, the patient reportedly had underlying health conditions that worsened after being infected with H5N1.
The other critically ill patient, a Canadian teenager, had to be admitted to a hospital's intensive care unit. According to Delon, the patient contracted the virus from wild birds.
Dr. Julio Figeroa, director of infectious diseases at the LSU Department of Health and professor of medicine at Louisiana State University in New Orleans, also participated in the IDSA conference call. He said there have been no secondary cases of avian influenza linked to the patient who died in Louisiana.
“We have people who hunt, hunt geese and ducks, so there are recommendations to treat those particular animals appropriately,” Figueroa said. “Many backyard herds here and in urban and suburban areas are also potential sources of infection.”
Highly pathogenic avian influenza H5N1 has affected more than 133 million poultry farms in all 50 states as of Wednesday, in addition to 919 dairy herds in 16 states, according to the U.S. Centers for Disease Control and Prevention. The virus originated in two backyard herds in Louisiana, and there have been a total of 49 cases in the U.S., the CDC reports.
Doron and Figueroa said coordination among the various federal and state authorities responding to the bird flu outbreak will be critical to containing the spread, especially as the incoming Trump administration takes over.
Asked to provide an estimate of when the current H5N1 outbreak will be brought under control or end on its own, Delon said it is difficult to tell at this point.
“I think it really depends on how long immunity lasts, and it's too early in the epidemic to know that,” she says. “…If immunity does not last for more than a few months, the infection could continue to spread indefinitely.”
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