Fever is an elevation of the body's core temperature above its normal range (typically >100.4°F or 38°C). It is a common physiological response, often indicating that the body is fighting an infection caused by viruses, bacteria, or other pathogens, or responding to inflammation. Everyone can experience fever, regardless of age or location. Track Fever activity and outbreaks specific to Delaware.
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Fever has been recognized as a fundamental sign of illness since ancient times, with early physicians like Hippocrates attributing it to an imbalance of bodily humors. The invention of the clinical thermometer in the 17th century by Sanctorius provided an objective measure. Over centuries, understanding evolved from fever being a disease itself to recognizing it as a physiological defense mechanism, crucial in the body's fight against infection.
Fever itself is a symptom and is not transmissible from person to person. However, the infectious diseases that cause fever, such as viral or bacterial illnesses, can spread. Common transmission routes include respiratory droplets from coughing or sneezing, direct physical contact, contact with contaminated surfaces, or through vectors like mosquitoes or ticks depending on the specific pathogen.
Contagious Period: Varies by disease
Local health department information and state-specific prevention guidance
Our AI-powered surveillance continuously monitors Fever activity across Delaware. We track data from state health departments, local hospitals, CDC reports, and 50+ global health sources to provide early warning of emerging threats.
Get instant push notifications when Fever activity increases in Delaware or your specific county.
For official state health alerts, vaccination locations, and public health guidance specific to Delaware, visit your state health department's website.
Whether you live in Delaware, are traveling there, or have family in the state, understanding Fever prevention is essential. Follow these evidence-based prevention measures:
If you experience symptoms of Fever in Delaware, contact your healthcare provider immediately. Early diagnosis and treatment improve outcomes significantly.
Emergency symptoms: If you experience severe symptoms, difficulty breathing, or signs of dehydration, call 911 or go to your nearest emergency room.
Trusted information from leading health organizations
Global disease surveillance and guidelines from the World Health Organization
View WHO Resources →Disease 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: 2026-06-03
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