Virus Watcher Weekly 3 min read

Virus Watcher Weekly, June 14 to 21, 2026

New World Screwworm re-emerges in US after decades, prompting CDC emergency activation. Australia detects first suspected mainland H5N1 avian influenza case.

VW

Virus Watcher Intelligence Desk

Written from CDC surveillance data and Virus Watcher outbreak feeds

Published 2026-06-21

This past week, Virus Watcher observed 545 surveillance posts, with no system alerts triggered. A significant development was the confirmed re-emergence of New World Screwworm in Texas and New Mexico, a parasitic fly not seen in the United States since 1966. The larvae, which infest open wounds in animals and can affect humans, have prompted the activation of emergency operations by the CDC.

Globally, avian-influenza-h5n1 remains a prominent concern, underscored by Australia's detection of its first suspected mainland case in Western Australia. The virus was found in a migratory sea bird, specifically a brown skua. Other top diseases monitored this week include covid-19, arboviral-diseases-west-nile-virus-disease, hantavirus, and ebola, indicating a broad spectrum of ongoing health intelligence interests.

The diverse nature of top-engagement posts this week highlights a continued focus on both emerging zoonotic threats and established infectious diseases. The re-emergence of the New World Screwworm in the US and the H5N1 case in Australia emphasize the dynamic landscape of global disease surveillance and the need for ongoing vigilance.

The week's top stories

  • New World Screwworm Confirmed in US The New World Screwworm, absent since 1966, has been confirmed in Texas and New Mexico, leading to CDC emergency operations.

  • Reckitt Nigeria Announces Board Appointments Reckitt Nigeria has appointed H.E. Mrs Toyin Ojora Saraki and Prince Abimbola Olashore as Independent Non-Executive Directors to strengthen its board.

  • World Cup's Potential Impact on Canadian Soccer The Los Angeles Times discusses how this World Cup could significantly boost soccer's popularity in Canada, akin to the 1994 tournament's effect on the U.S.

  • Australia Detects First Suspected Mainland H5N1 Case Australia has reported its first suspected mainland case of H5N1 bird flu in a migratory sea bird found in Western Australia.

  • World Cup Matchday 7 Predictions The Athletic and The New York Times provide predictions for World Cup matchday 7 games, including England vs Croatia and Portugal vs DR Congo.

This week by the numbers: 545 surveillance items processed, 5 diseases active.

Previous week: Jun 7 · Next week: Jun 21 · All weeks

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