Multiple sclerosis (MS) and other conditions affecting the immune system can activate the John Cunningham (JC) virus, causing a potentially life threatening infection. The JC virus is common ...

Measles is rarely seen in the United States, but Americans are growing more concerned about the preventable virus as cases ...

Dengue virus, a WHO grade 3 emergency, infected over 10 million individuals in 2024. With no population-effective prophylaxis or direct treatment, there is an urgent need for immediate vector control ...

Symptoms typically start within 7-14 days of exposure, but also have been known to appear as long as 21 days after initial exposure.