US - West

Two more bird flu cases reported in Colorado, but elsewhere a study finds no asymptomatic infections U.S. health officials have announced two more bird flu cases among farmworkers. But here’s some good news: A new study in Michigan suggests the virus is not causing asymptomatic infections in people. AP News

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US COVID-19 activity rising steadily Respiratory illness viruses as a whole remain at low levels, but many parts of the countries are experiencing consistent increases in COVID-19 activity, which has been trending upward from very low levels, the US Centers for Disease Control and Prevention (CDC) said today in its latest updates. CIDRAP

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US COVID markers show small rise in activity Wastewater detections are up in the western region, which is also seeing a small rise in test positivity. CIDRAP

The main markers the Centers for Disease Control and Prevention (CDC) uses to track COVID activity showed small rises Friday from very low levels, including wastewater SARS-CoV-2 detections, which rose from the minimal to low level over the past week....

What stays in Vegas: Tourist sewage may inflate community COVID prevalence CIDRAP

While SARS-CoV-2 wastewater surveillance is a valuable way to measure disease prevalence and predict surges, a new study conducted in Las Vegas suggests that the tool may overestimate the true viral burden in areas with large influxes of tourists or commuters.

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