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What the Canadian bird flu case means for us

Plus, measles, E. coli, noro and head lice!

November 15, 2024

Bird Flu News:

  • A teenager in Canada is in critical condition with an H5N1 infection from the strain in wild birds (not cows). They had no known contact with poultry. (STAT)
  • The testing company Alveo announced a deal with CDC to produce rapid tests to differentiate between flu A, flu B, and H5 (avian type) flu in humans. (CIDRAP)
  • California is tapping its pandemic PPE stockpile for farmworkers to prevent bird flu outbreaks amid multibillion-dollar deficits. (KFF Health News)
  • After traces of bird flu were found in Oahu’s wastewater, Hawaiian poultry and egg farmers are asked to watch for sick birds. (Civil Beat)
  • More than 500 dairy herds in the U.S. have now been infected with H5N1 after 13 more herds tested positive in California. (CIDRAP)

Health News: 

  • Global progress towards measles elimination is backsliding due to lower vaccine coverage, with a 20% increase to 10 million cases last year. (MMWR)
  • There’s a norovirus hotspot near Las Vegas. Wastewater testing is showing a notable increase, per the health department. (Fox 5)
  • FDA announced yet another E. coli O157:H7 outbreak with 18 cases, separate from the one linked to onions. This brings the current count to 168 cases in outbreaks tied to 3 different strains. (FDA)
  • FDA also closed 3 investigations after IDing sources, including Salmonella Typhimurium linked to jalapenos and two Cyclospora outbreaks linked to parsley and shrimp salad. (FDA)
  • A Salmonella outbreak linked to the Great Falls Public Schools in Montana has 10 confirmed cases... (KRTV)
  • …and an E. coli outbreak in St. Louis with 19 cases is tied to an event at a local high school… (SLPR)
  • …and an elementary school in California closed after 93 cases of norovirus. (KSBW)
  • E. coli cases linked to onions on McDonald’s Quarter Pounders have risen to 104, with 34 hospitalizations. (Newsweek)
  • Walking pneumonia is surging ahead of flu, rsv, and COVID, with cases 10x higher than last year - especially in young kids. (ABC)
  • Pathogens like Listeria and E. coli can cling to microplastics to survive wastewater treatment, posing a health risk for reused drinking and irrigation water. (CIDRAP)

Mental Health & Substance Use News:

  • Opioid deaths dropped for the 12th straight month, now the lowest since 2020. (CBS)
  • GLP-1 drugs like Ozempic and Wegovy may help with alcohol use disorder. (The Hill)
  • Harm reduction advocates are using vending machines for free Narcan and clean needles in Massachusetts. (NPR)

If you or someone you know may be considering suicide or need help, call or text 988.

Best Questions:

Should we be worried about all this bird flu news, including the Canadian teen in critical condition?

Bird flu is back at the top of the news. Leading the headlines is a story about a Canadian teenager who was healthy before contracting H5N1 and is now in critical condition, too sick to answer questions about how they might have been infected. It’s devastating for that teen and their family, though the pandemic risk remains low. 

This person has the variant that’s found in wild birds, not dairy cows. There’s no evidence of human-to-human transmission at all, and while it’s the first locally-acquired bird flu in Canada, it’s not uncommon globally for humans to be infected from wild birds and then have severe illness. Some level of spread to humans is an expected outcome of the massive outbreak happening among wild birds and mammals, but one-off cases like this one don’t significantly raise the risk of spread between humans. 

We’re certainly keeping an eye on it, especially as flu has started to rise nationally, which adds an element of risk in case a person (or pig, or even cow) is infected with a human virus and H5N1, which could then swap genes and create a new version that can spread more easily between humans. But again, this virus has had ample opportunity over decades and has never yet started to spread between people. That doesn’t mean a single reassortment event can’t change that, but the fact that it hasn’t happened yet means that we’re not panicking. 

Sources: STAT, CIDRAP, CDC

Why do we have so many employees with head lice?

Head lice seems to be everywhere right now - we’ve gotten dozens of questions about them over the past few months from clients across industries. They spread relatively easily, often via kids at school and then through individual households. But lice are a nuisance, not a health threat because they don’t carry diseases. There are plenty of misconceptions about them, but they don’t mean that someone is dirty (there’s actually some evidence that they prefer clean hair). Anecdotally, there are reports around the world of more lice right now, and some think there’s an unexpected culprit: selfies. When people touch their heads together to take a picture, lice (who only crawl and don’t jump) can make their way from one person to another. That said, they’re relatively hard to spread in the workplace as long as you’re not sharing hats or hairnets - or taking too many selfies. 

If an employee has head lice, send them home to dry clean their clothing, vacuum their furniture, and clean their hair brushes and combs in hot water. Then, they can take over-the-counter treatment (usually a medicated shampoo and a special brush to remove the nits and lice). Once they’ve completed a treatment, they can return to work 24 hours later. At work, you should wash aprons, hair nets, or other reusable items in hot water before the employee returns. 

Sources: ZHH Head Lice Action Plan, CDC, Washington Post

Best Read:

The future of vaccine policy in the United States - Your Local Epidemiologist