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    Hiking Trail in Hawaii Closes After Norovirus Outbreak

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    Four people tested positive for the virus, which causes a highly contagious gastrointestinal illness, officials said. The trail was recommended to remain closed until at least Sept. 19.A popular hiking trail on the island of Kauai in Hawaii was closed this week after more than three dozen people fell ill in what officials said was a “rare occurrence” of the highly contagious norovirus.The Kalalau Trail, a 22-mile round-trip stretch within the Napali Coast State Wilderness Park, was recommended to remain closed until at least Sept. 19 while Department of Health officials assessed the ongoing risk of transmission and as stations along the trail were cleaned and disinfected.The Health Department received reports of illness from at least 37 hikers and campers over the last several weeks, though the actual number is expected to be higher, officials said.“This is a very concerning and rare occurrence, magnified by the extreme remote nature of the Kalalau Valley,” Curt Cottrell, an administrator for state parks, said in a statement.The trail was closed on Wednesday after health officials received numerous reports of gastrointestinal illnesses from hikers, and on Thursday the Health Department said that test results from four patients confirmed that they had contracted norovirus.The state’s Department of Land and Natural Resources said in a statement that dozens of backpackers along the trail had reported gastrointestinal illness, and that one person had been evacuated but no one had been hospitalized.We are having trouble retrieving the article content.Please enable JavaScript in your browser settings.Thank you for your patience while we verify access. If you are in Reader mode please exit and log into your Times account, or subscribe for all of The Times.Thank you for your patience while we verify access.Already a subscriber? Log in.Want all of The Times? Subscribe. More

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      Dr. Anthony Fauci Recovering From West Nile Virus Infection

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      The former director of the National Institute of Allergy and Infectious Diseases had been hospitalized and was expected to make a full recovery, a spokeswoman said.Dr. Anthony Fauci, the former government scientist who was both lauded and criticized for his work on Covid-19, was recently hospitalized with a case of West Nile virus and is recovering at home, according to a spokeswoman for the doctor.“A full recovery is expected,” the spokeswoman, Jenn Kuzmuk, said in a statement on Sunday on behalf of Dr. Fauci, 83, the former director of the National Institute of Allergy and Infectious Diseases.She did not elaborate on where he was hospitalized or for how long.Dr. Jonathan LaPook, the chief medical correspondent for CBS News, shared on social media that Dr. Fauci had told him that he had fever, chills and severe fatigue and that he was hospitalized this month. Dr. Fauci said he was most likely infected by a mosquito bite that he got in his backyard, Dr. LaPook said.West Nile virus is most commonly spread through the bite of an infected mosquito and is the leading cause of mosquito-borne disease in the continental United States, according to the Centers for Disease Control and Prevention.People become infected with the virus after mosquitoes feed on infected birds and then bite people, according to the C.D.C.“People are considered dead-end hosts because, unlike birds, they do not develop high enough levels of virus in their bloodstream and cannot pass the virus on to other biting mosquitoes,” the agency says on its website.West Nile cases primarily occur during mosquito season, which starts in the summer and continues through the fall. Symptoms may include fever, headache, body aches, vomiting, diarrhea or rash.At least 216 cases of West Nile virus have been detected in 33 states this year, according to the C.D.C. There are no vaccines to prevent or medicines to treat West Nile virus in people. The best prevention against the virus is to avoid mosquito bites.Lauded as the nation’s top infectious disease expert, Dr. Fauci, President Biden’s former chief medical adviser, retired in December 2022 as director of the National Institute of Allergy and Infectious Diseases, part of the National Institutes of Health, after 38 years.As the public face of American science for decades, Dr. Fauci advised seven presidents and guided the country’s response to infectious disease outbreaks from the AIDS epidemic to Covid-19.Dr. Fauci joined the faculty at Georgetown University last year as a distinguished university professor at its medical school.In June, testifying before a House panel investigating Covid’s origins, he denied Republican allegations that he had helped fund research that led to the pandemic or that he had covered up the possibility of its origins in a laboratory. More

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      Why Your Covid Symptoms Could Feel Different This Time

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      Cases are rising across the United States. Here’s what to know about how symptoms of an infection can shift.By this point in the Covid-19 pandemic, most people have had at least one brush with the virus. Those of us who have been infected again (and again) may think we know the drill.But symptoms can vary from one infection to the next. The virus has felt like an entirely different illness each time I’ve tested positive: The first go-round, a fever flattened me. Once, I had barely any symptoms. The worst infection left me wrung-out on my couch, so exhausted I had to strain to pay attention to a podcast.“No two Covid infections really have behaved the same,” said Dr. Joseph Khabbaza, a pulmonary and critical care doctor at Cleveland Clinic.Generally speaking, the more immunity people build up from vaccination or infections, the milder symptoms of subsequent infections tend to be. But for an individual, there is no guarantee that a second infection will be less severe than the first.That’s partly because the virus has changed, developing into new variants. If you’re reinfected, that means the virus has evolved enough to slip past your immune defenses, said Dr. Davey Smith, an infectious disease specialist at the University of California, San Diego.Many Covid symptoms have stayed the same since 2020: fever, sore throat, coughing. But some have shifted. It used to be common for people to lose their sense of taste and smell when they got sick, for example, but that now seems to happen less frequently. Early in the pandemic, Dr. Khabbaza said, patients would tell him that their Covid infections felt like nothing they had experienced before. Now, he said, people often think they have a cold, and are shocked when they test positive.We are having trouble retrieving the article content.Please enable JavaScript in your browser settings.Thank you for your patience while we verify access. If you are in Reader mode please exit and log into your Times account, or subscribe for all of The Times.Thank you for your patience while we verify access.Already a subscriber? Log in.Want all of The Times? Subscribe. More

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      The Disease Detectives Trying to Keep the World Safe From Bird Flu

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      As Dr. Sreyleak Luch drove to work the morning of Feb. 8, through busy sunbaked streets in Cambodia’s Mekong river delta, she played the overnight voice messages from her team. The condition of a 9-year-old boy she had been caring for had deteriorated sharply, and he had been intubated, one doctor reported. What, she wondered, could make the child so sick, so fast?“And then I just thought: H5N1,” she recalled. “It could be bird flu.”When she arrived at the airy yellow children’s ward at the provincial hospital in Kratie, she immediately asked the child’s father if the family had had contact with any sick or dead poultry. He admitted that their rooster had been found dead a few days before and that the family had eaten it.Dr. Luch told her colleagues her theory. Their responses ranged from dubious to incredulous: A human case of avian influenza had never been reported in their part of eastern Cambodia. They warned her that if she set off the bird flu warning system, many senior government officials might get involved. She risked looking foolish, or worse.Anxious but increasingly certain, Dr. Luch phoned the local public health department, located just across the street. Within minutes, a team arrived to collect a sample from the child, Virun Roeurn, for testing in a lab.By then, Virun’s distraught parents had lost faith in the hospital. They demanded that he be sent by ambulance to the capital, Phnom Penh. His flu swab sample traveled with him.Virun died on the journey. At 8 p.m., Cambodia’s National Public Health Laboratory confirmed Dr. Luch’s suspicion: He had died of highly pathogenic avian influenza.We are having trouble retrieving the article content.Please enable JavaScript in your browser settings.Thank you for your patience while we verify access. If you are in Reader mode please exit and log into your Times account, or subscribe for all of The Times.Thank you for your patience while we verify access.Already a subscriber? Log in.Want all of The Times? Subscribe. More

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      One in Five Milk Samples Nationwide Shows Genetic Traces of Bird Flu

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      There is no evidence that the milk is unsafe to drink, scientists say. But the survey result strongly hints that the outbreak may be widespread.Federal regulators have discovered fragments of bird flu virus in roughly 20 percent of retail milk samples tested in a nationally representative study, the Food and Drug Administration said in an online update on Thursday.Samples from parts of the country that are known to have dairy herds infected with the virus were more likely to test positive, the agency said. Regulators said that there is no evidence that this milk poses a danger to consumers or that live virus is present in the milk on store shelves, an assessment public health experts have agreed with.But finding traces of the virus in such a high share of samples from around the country is the strongest signal yet that the bird flu outbreak in dairy cows is more extensive than the official tally of 33 infected herds across eight states.“It suggests that there is a whole lot of this virus out there,” said Richard Webby, a virologist and influenza expert at St. Jude Children’s Research Hospital.Dr. Webby said that he believed it was still possible to eradicate the virus, which is known as H5N1, from the nation’s dairy farms. But it will be difficult to design effective control measures without knowing the scope of the outbreak, he said.The findings also raise questions about how the virus has evaded detection and where else it might be silently spreading. Some scientists have criticized the federal testing strategy as too limited to reveal the true extent of viral spread.We are having trouble retrieving the article content.Please enable JavaScript in your browser settings.Thank you for your patience while we verify access. If you are in Reader mode please exit and log into your Times account, or subscribe for all of The Times.Thank you for your patience while we verify access.Already a subscriber? Log in.Want all of The Times? Subscribe. More

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      Bird Flu Spreads to Dairy Cows

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      U.S. regulators confirmed that sick cattle in Texas, Kansas and possibly in New Mexico contracted avian influenza. They stressed that the nation’s milk supply is safe, saying pasteurization kills viruses.A highly fatal form of avian influenza, or bird flu, has been confirmed in U.S. cattle in Texas and Kansas, the Department of Agriculture announced on Monday.It is the first time that cows infected with the virus have been identified.The cows appear to have been infected by wild birds, and dead birds were reported on some farms, the agency said. The results were announced after multiple federal and state agencies began investigating reports of sick cows in Texas, Kansas and New Mexico.In several cases, the virus was detected in unpasteurized samples of milk collected from sick cows. Because pasteurization kills viruses, officials emphasized that there was little risk to the nation’s milk supply.“At this stage, there is no concern about the safety of the commercial milk supply or that this circumstance poses a risk to consumer health,” the agency said in a statement.Outside experts agreed. “It has only been found in milk that is grossly abnormal,” said Dr. Jim Lowe, a veterinarian and influenza researcher at the College of Veterinary Medicine at the University of Illinois at Urbana-Champaign.In those cases, the milk was described as thick and syrupy, he said, and was discarded. The agency said that dairies are required to divert or destroy milk from sick animals.We are having trouble retrieving the article content.Please enable JavaScript in your browser settings.Thank you for your patience while we verify access. If you are in Reader mode please exit and log into your Times account, or subscribe for all of The Times.Thank you for your patience while we verify access.Already a subscriber? Log in.Want all of The Times? Subscribe. More