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Missouri Investigates Potential Human-to-Human Bird Flu Transmission

Eight individuals, including six health workers, show symptoms after contact with an infected patient, prompting CDC investigation.

Influenza A Virus (H5N1/Bird Flu) Three influenza A (H5N1/bird flu) virus particles (rod-shaped; yellow). Note: Layout incorporates two CDC transmission electron micrographs that have been repositioned and colorized by NIAID. Scale has been modified. Credit: CDC and NIAID
Bird Flu
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FILE PHOTO: Test tube is seen labelled "Bird Flu" in front of U.S. flag in this illustration taken, June 10, 2024. REUTERS/Dado Ruvic/Illustration/File Photo/File Photo

Overview

  • A patient in Missouri was hospitalized with H5N1 bird flu, with no known contact with infected animals.
  • Six health care workers and one household member who had contact with the patient developed mild respiratory symptoms.
  • Blood samples from the affected individuals are being tested for H5N1 antibodies to determine past infection.
  • Experts express concern over the potential for human-to-human transmission but emphasize that no evidence confirms this yet.
  • Missouri health officials, with CDC support, are investigating the source and potential spread of the virus.