CDC · emergency department data · weekly · week ending 24 October 2026

Flu in Puerto Rico This Week

CDC has no flu emergency-department data or respiratory illness level for Puerto Rico for the week ending 24 October 2026. Check the local health department.

All states CDC FluView ↗ Flu A in wastewater UK flu

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ER visits for flu, week ending 24 Oct

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The week before

Data Unavailable

CDC respiratory illness level

Recent weeks in Puerto Rico — share of emergency department visits

CDC's emergency department data has no weekly rows for Puerto Rico.

Official advice

What this page shows, and what it misses

Two CDC weekly numbers for each state. The flu share of ER visits is the percentage of all emergency department visits that were diagnosed as flu, from hospitals reporting to the National Syndromic Surveillance Program, with CDC's own trend label. The respiratory illness level is CDC's official grade for all acute respiratory illness — flu, COVID-19, RSV and colds together — so a state can be graded High while flu is still low. Neither number counts flu cases: most people with flu never go to an ER, and not every hospital reports. Territories and states without data show "—". Flu virus in sewage is on our wastewater page.

Data: Centers for Disease Control and Prevention — "Level of Acute Respiratory Illness (ARI) Activity by State" and National Syndromic Surveillance Program "Emergency Department Visit Trajectories by State" (data.cdc.gov) — public domain U.S. Government works.

FAQ Flu questions

Is flu going around in Puerto Rico right now?

CDC has no flu emergency-department data or respiratory illness level for Puerto Rico for the week ending 24 October 2026. Check the local health department.

What does CDC's respiratory illness level mean?

CDC grades each state every week from Very Low to Very High by how many emergency department visits are for acute respiratory illness of any kind — flu, COVID-19, RSV and colds — compared with that state's own usual range. It is not a flu-only measure; the flu share of visits on this page is.

Where can I get a flu shot in Puerto Rico?

CDC's vaccines.gov lists pharmacies and clinics near you that have flu vaccine. CDC recommends a yearly flu vaccine for everyone aged 6 months and older, with rare exceptions.