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Photo: Soumyabrata Roy/NurPhoto via Getty Images

The Food and Drug Administration on Saturday urged people to stop taking ivermectin — a drug used to treat parasites in animals — to respond to or prevent the coronavirus.

Driving the news: The Mississippi State Health Department on Friday sent a letter warning health workers of the increase in poisonings from people taking ivermectin.

What they're saying: "The Mississippi Poison Control Center has received an increasing number of calls from individuals with potential ivermectin exposure taken to treat or prevent COVID-19 infection," state officials said in the letter.

  • "At least 70% of the recent calls have been related to ingestion of livestock or animal formulations of ivermectin purchased at livestock supply centers," they added.
  • "Never use medications intended for animals on yourself. Ivermectin preparations for animals are very different from those approved for humans," FDA guidance says.
A tweet previously embedded here has been deleted or was tweeted from an account that has been suspended or deleted.

Flashback: The World Health Organization in March issued a warning saying ivermectin should only be used in clinical trials because evidence of its use for the coronavirus was "inconclusive."

Go deeper

Federal court blocks Biden's vaccine mandate for health workers in 10 states

President Biden delivers remarks on the Omicron COVID-19 variant following a meeting with his COVID-19 response team. Photo: Anna Moneymaker via Getty Images

A federal court in Missouri has blocked the Biden administration from enforcing a coronavirus vaccine mandate for health care workers at federally funded facilities in 10 states.

Why it matters: Monday's decision is the first victory for opponents of the rule, which requires health care workers to get vaccinated by Jan. 4, 2022. The case is one of four lawsuits challenging the Centers for Medicare & Medicaid Services' (CMS) rule and argues that the mandate will exacerbate staffing shortages.

Nov 29, 2021 - Health

CDC strengthens COVID booster recommendation

Rochelle Walensky. Photo: Chip Somodevilla/Getty Images

The Centers for Disease Control and Prevention (CDC) on Monday strengthened its previous recommendation for booster shots, saying that everyone 18 and older "should" receive a booster dose.

Why it matters: Last month, CDC director Rochelle Walensky accepted a key advisory committee's recommendation that adults "may" get the shot. The slight, but strengthened, change in wording comes amid the emergence of the Omicron coronavirus variant.

Nov 26, 2021 - Health

U.S. to restrict air travel from 8 countries over new COVID variant concerns

A COVID-19 vaccine is administered. Photo: Joe Raedle/Getty Images

The U.S. will impose new air travel restrictions in response to the Omicron variant, a new COVID-19 strain first detected in South Africa, President Biden announced Friday.

The big picture: Air travel from South Africa, Botswana, Zimbabwe, Namibia, Lesotho, Eswatini, Mozambique and Malawi will be restricted starting on Monday.