Overview Rabies Disease is one of the world’s most feared viral infections. Caused by the rabies virus (RABV), it affects the central nervous system and, once symptoms appear, it is almost always fatal. The disease...
Overview Ebola virus disease (EVD), formerly known as Ebola hemorrhagic fever, is a rare but life-threatening infection caused by several species of the Orthoebolavirus genus. The disease first appeared in 1976 during outbre...
Overview Dengue fever is a mosquito-borne illness that affects millions of people each year, mainly in tropical and subtropical regions. It is caused by one of four dengue viruses (DENV-1, DENV-2, DENV-3, DENV-4), which are spread th...
What Is COVID-19? COVID-19, short for coronavirus disease 2019, is a respiratory illness caused by the SARS-CoV-2 virus. First identified in Wuhan, China, in late 2019, it spread rapidly across the globe and was declared a pa...
Malaria is one of the world’s most widespread and dangerous infectious diseases. It is caused by Plasmodium parasites and spreads through the bite of infected female Anopheles mosquitoes. While it is rare in the United States and Europe, malaria remains a major global health challenge, with hundreds of m...
What Is Hepatitis? Hepatitis is the term for inflammation of the liver. Since the liver is essential for digesting food, filtering toxins, and storing energy, inflammation can affect the entire body. Hepatitis may be short-t...
Tuberculosis (TB) is an ancient disease that continues to affect millions of people around the world. Caused by the bacteria Mycobacterium tuberculosis, TB most commonly attacks the lungs, but it can also spread to other organs such as the brain, spine, or kidneys. While it was once the leading cause of death in th...
HIV and AIDS are often mentioned together, but they’re not the same thing. HIV stands for human immunodeficiency virus, a virus that attacks the body’s immune system. If left untreated, it can lead to AIDS, which is the most advanced stage of HIV infection. With modern treatment, however, HIV is now considered...
Influenza, more commonly known as the flu, is a highly contagious respiratory illness caused by influenza viruses. Unlike the “stomach flu,” which refers to gastroenteritis, true influenza attacks the respiratory system—the nose, throat, and lungs. While many people recover within a week or two, the flu can sometimes...
Tourette Syndrome (TS) is a neurological disorder that affects the brain and nervous system, leading to sudden, repetitive movements or sounds called tics. These tics are involuntary — meaning people can’t fully control them — and often begin in childhood. While the condition may sound intimidating, most peop...
