Scarlet Fever is a bacterial infection caused by *Streptococcus pyogenes*, the same bacteria responsible for strep throat. It commonly affects children, presenting with a characteristic bright red rash and fever, often following a strep throat infection.
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Scarlet Fever was a feared and often fatal childhood disease, particularly in the 19th and early 20th centuries, before the discovery of antibiotics. Its incidence dramatically declined with the introduction of penicillin. However, there have been periodic resurgences of Scarlet Fever in various parts of the world in recent decades.
Scarlet Fever spreads through respiratory droplets when an infected person coughs or sneezes. It can also be transmitted through direct contact with infected saliva or nasal secretions, or by touching contaminated surfaces and then touching one's mouth or nose. Close contact in crowded environments facilitates its spread.
Contagious Period: Varies by disease
Local health department information and state-specific prevention guidance
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For official state health alerts, vaccination locations, and public health guidance specific to Minnesota, visit your state health department's website.
Whether you live in Minnesota or are traveling there, knowing the symptoms, timeline, and when to seek care helps you act quickly if exposure occurs.
Seek care if you experience severe dehydration, bloody stools, high fever, or symptoms lasting more than 3 days. Children under 5, adults over 65, and immunocompromised individuals should seek care earlier.
Emergency symptoms: Severe dehydration, inability to keep fluids down for 12 or more hours, or neurological symptoms require emergency care.
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Trusted information from leading health organizations
Official guidance from the U.S. Centers for Disease Control and Prevention
View CDC Resources βGlobal disease surveillance and guidelines from the World Health Organization
View WHO Resources βDisease information on Virus Watcher is reviewed by our Chief Epidemiologist, a former CDC lead analyst for FluSight forecasting. Outbreak data is aggregated from verified sources including BEACON, ProMED, WHO, CDC, and 50+ national health agencies. This information is for educational purposes and should not replace professional medical advice.
Last reviewed: 2026-07-18
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