Infectious Diseases Vaccination CDC Epidemiology COVID-19 Centers for Disease Control and Prevention Vector Control Outbreak Management Malaria Rabies Outbreak Response Zoonotic Diseases Measles Surveillance Tuberculosis Polio Risk Assessment Preventive Measures Dengue Fever Avian Flu Bird Flu Avian Influenza Monitoring Mosquito-Borne Diseases Vector-Borne Diseases Pest Management Antimicrobial Resistance Neglected Tropical Diseases Centers for Disease Control CDC Operations Pandemic Preparedness Contact Tracing Measles Outbreak Centers for Disease Control and Prevention (CDC) Virus Spread COVID-19 Response Mpox Outbreak Response Vector Management Vaccination Strategies Funding Pathogen Resistance Vaccination Programs E. coli Infections Infection Prevention Epidemiological Response Water Access Passenger Health Avian Diseases Respiratory Diseases Insect-Borne Diseases Monitoring Infectious Diseases Vaccine Development Ebola HIV HIV Treatment Lymphatic Filariasis Chlamydia Outbreak Virus Mutation Norovirus Avian Flu in Humans Mpox Outbreaks Workforce Issues CDC Policies Health Agencies Malaria and Dengue Health Policy Federal Health Agencies Vaccine Approval Salmonella Outbreaks Chikungunya Pandemic Restrictions COVID-19 Testing Leptospirosis Listeria Outbreak Pertussis Prevention Virus Outbreak Virus Containment Measures for Disease Control COVID-19 Guidance Mask-Wearing Guidelines Isolation Protocols CDC Recommendations Surveillance Data Measles Containment Title 42 Policy Ebola Virus Disease Avian Flu Control Measures Public Health Measures Disease Transmission Biosecurity Measures Outbreak Investigation Animal Health Virus Detection Prevention Measures Virology Virus Transmission Vaccination Campaigns Virus Classification Animal Diseases Pandemic Response
The CDC reports a record-breaking wave of outbreaks this year, with 12 confirmed norovirus cases among 16 gastrointestinal incidents on cruise ships in 2025.