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4 min read National Report

This week in outbreaks

Week ending January 28, 2023

This week in outbreaks

Influenza like illness (ILI) is teasing us by remaining just above baseline in the week ending January 28. After nine weeks of continual progress, I hoped we would zoom right down to low levels of ILI activity. Alas, the percentage of visits to the doctor that are for ILI remained at 2.6%, exactly where it was the week prior. Activity remained stable at the national level, and within each age group.

Influenza like illness activity for week ending January 28. Source. Annotations mine.

Four jurisdictions are experiencing high or very high ILI activity, including New York City, New Mexico, and Puerto Rico.

Oklahoma is unexpectedly now in the “very high” category, with 5.7% of outpatient visits meeting the criteria for ILI. During the previous week, ILI activity in Oklahoma was two points lower at around 3.5%. I emailed the Oklahoma Department of Health to learn more, and their lead respiratory disease epidemiologist replied that influenza test positivity is trending down, and so too is the number of influenza hospitalizations, so it may be a non-influenza respiratory virus causing the spike. I hope to see things settle down next week.

Influenza like illness activity. Source.

COVID-19 activity is still falling, though the overall impact remains quite high. Over 31,000 people are in the hospital with COVID-19, and the average number of daily deaths is around 500. Delaware, Washington D.C., North Carolina, and New York are currently the most affected jurisdictions, judging by hospitalization rate.

RSV activity is still falling, unlike the seasonal coronaviruses which are rising stubbornly. The seasonal coronaviruses are one of the causes of the common cold.

Stomach bugs

Norovirus activity seems quite high. Norovirus causes the “stomach bug,” i.e., vomiting and diarrhea. There aren’t many good data streams for norovirus surveillance, so I don’t comment on it each week, but I do think there’s quite a bit going around right now.

Three-week average of test positivity for norovirus infection. Source.

Food recalls (and eye drops)

The following foods are being recalled because they are contaminated with bacteria that causes food poisoning. Please check your cupboards and throw out any of these items:

New this week:

Reported in the last month:

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