Measles Cases and Outbreaks
WHAT TO KNOW
- Updated on March 14, 2025. The data on this page reflects confirmed measles cases reported to CDC as of noon on Thursdays.
- Starting 2/21/25, CDC will update this page every Frid
CDC Centers for Disease Control and Prevention.
Salmonella Outbreak Linked to Geckos
CDC and public health officials in several states are investigating a multistate outbreak ofSalmonella infections linked to pet geckos. Geckos can carry Salmonella germs that can spread to you and make you sick. Always take steps to stay healthy around your pet gecko.
Listeria Outbreak Linked to Supplement Shakes
CDC, FDA and public health officials in several states are investigating a multistate outbreak of Listeria infections linked to supplement shakes. Many people in this outbreak lived in long-term care facilities or were hospitalized before becoming sick.
Current Dengue Outbreak
WHAT TO KNOW
- In 2024, over 13 million cases of dengue have been reported in North, Central, and South America and the Caribbean.
- Outbreaks in areas where dengue is common has increased the number of cases in travelers to those areas and may result in small outbreaks in the continental United States.
- Prevent dengue by avoiding mosquito bites!
People with Certain Medical Conditions and COVID-19 Risk Factors
WHAT TO KNOW
- If you have any medical conditions listed below, you are more likely to get very sick with COVID-19.
- This list does not include all conditions.
- If you have symptoms consistent with COVID-19 and are ages 50 years or older OR have a condition placing you at higher risk of getting very sick, you are eligible for treatment.
How to Protect Yourself and Others
WHAT TO KNOW
- CDC’s Respiratory Virus Guidance provides strategies you can use to help protect yourself and others from health risks caused by COVID-19 and other respiratory viruses.
- These actions can help you lower the risk of COVID-19 transmission (spreading or catching COVID-19) and lower the risk of severe illness if you get sick.
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Core Prevention Strategies
CDC recommends that all people use core prevention strategies to protect themselves and others from COVID-19:
- Stay up to date with COVID-19 vaccines.
- Although vaccinated people sometimes get infected with the virus that causes COVID-19, staying up to date on COVID-19 vaccines significantly lowers the risk of getting very sick, being hospitalized, or dying from COVID-19.
- Although vaccinated people sometimes get infected with the virus that causes COVID-19, staying up to date on COVID-19 vaccines significantly lowers the risk of getting very sick, being hospitalized, or dying from COVID-19.
- Practice good hygiene (practices that improve cleanliness)
- Take steps for cleaner air
WHAT TO KNOW
- As of March 14, 2025, the amount of acute respiratory illness causing people to seek healthcare is at a moderate level.
- Seasonal influenza activity remains elevated nationally but has decreased for four consecutive weeks.
- COVID-19 activity is declining nationally but elevated in some areas of the country.
- RSV activity is declining in most areas of the country.
- The community snapshot shows activity levels using the following colors: Very Low, Low, Moderate, High, Very High.
- As of March 14, 2025, the amount of acute respiratory illness causing people to seek healthcare is at a moderate level.
- Stay up to date with COVID-19 vaccines.
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†Flu levels are for Influenza A only, which includes avian influenza A(H5). Wastewater data cannot determine the source of viruses (from humans, animals, or animal products).
Weekly national summary
Reported on Friday, March 14, 2025
Seasonal influenza activity remains elevated nationally but has decreased for four consecutive weeks. COVID-19 activity is declining nationally but elevated in some areas of the country. RSV activity is declining in most areas of the country.
COVID-19
COVID-19 activity is declining nationally but elevated in some areas of the country. Wastewater levels and emergency department visits are at low levels, and laboratory percent positivity is stable. Emergency department visits and hospitalizations are highest in older adults and emergency department visits are also elevated in young children.
There is still time to benefit from getting your recommended immunizations to reduce your risk of illness this season, especially severe illness and hospitalization.
CDC expects the 2024-2025 COVID-19 vaccine to work well for currently circulating variants. There are many effective tools to prevent spreading COVID-19 or becoming seriously ill.
Influenza
Seasonal influenza activity remains elevated nationally but has decreased for four consecutive weeks. Data to date suggest the season has peaked, however, flu-related medical visits, hospitalizations, and deaths remain elevated, and CDC expects several more weeks of flu activity.
Additional information about current influenza activity can be found at: Weekly U.S. Influenza Surveillance Report | CDC
RSV
RSV activity is declining in most areas of the country. Emergency department visits and hospitalizations are highest in children and hospitalizations are elevated among older adults in some areas.
Vaccination
Vaccination coverage with influenza and COVID-19 vaccines is low among U.S. adults and children. Vaccination coverage with RSV vaccines remains low among U.S. adults. Many children and adults lack protection from respiratory virus infections provided by vaccines.
Other Respiratory Illnesses
Pertussis
Reported cases of whooping cough (pertussis) continue to be elevated nationwide. Whooping cough is very contagious and can spread easily from person to person. Babies younger than 1 year old are at highest risk of severe disease and complications. The best way to prevent complications from whooping cough is to get vaccinated. Learn more: About Whooping Cough | Whooping Cough | CDC.
Mycoplasma pneumoniae
Respiratory infections caused by the bacteria Mycoplasma pneumoniae continue to decline from their peak in late 2024. Learn more: About Mycoplasma pneumoniae Infection | M. pneumoniae | CDC.
Group A Strep
Respiratory infections caused by group A Streptococcus bacteria are at typical elevated levels for this time of the year. Learn more: About Strep Throat | Group A Strep | CDC.
Season Outlook
The CDC has determined that the highest hospital demand for COVID-19, flu, and RSV to date this season occurred during the week ending February 1, 2025, and it was lower than the peak demand from last season. However, influenza activity remains high in most areas.
The peak hospital demand due to COVID-19 during this fall and winter respiratory season was lower than all previous seasons, and nearly 50% lower than the peak demand last season.
CDC does not anticipate producing additional respiratory disease outlook updates during the remainder of the 2024-2025 season. Read the entire 2024-2025 Respiratory Season Outlook - February Update (2/19/2025).
Protect yourself and your community
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Safeguard your health - Get the latest information from Vaccines.gov
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Order 4 free at-home COVID-19 tests today on COVIDTests.gov
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Explore resources and recommendations for older adults - Stay informed and protected
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Review tailored health recommendations for high-risk individuals
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Feeling ill? Take immediate steps to protect yourself and others – Start here
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Have symptoms? Consider wearing a mask
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Take action against germs – Practice good hygiene
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Got questions? Check out our FAQs
Continue exploring these data
Updates on how COVID-19, Flu, and RSV may be spreading nationally and in your state
Data on how respiratory viruses are contributing to serious health outcomes
How people of different ages, race and ethnicity, and sex are affected by COVID-19, flu, and RSV.
CDC is the nation's leading science-based, data-driven, service organization that protects the public's health. CDC works 24/7 to protect America from health, safety and security threats, both foreign and in the U.S.
