Varicella zoster virus Varicella zoster virus Varicella zoster virus or varicella-zoster virus (VZV) is one of eight herpesviruses known to infect humans. It causes chickenpox (varicella), a disease most commonly affecting children, teens, and young adults, and shingles (herpes zoster) in adults; shingles is rare in children. VZV is a worldwide pathogen known by many names: chickenpox virus, varicella virus, zoster virus, and human herpesvirus type 3 (HHV-3). VZV infections are species-specific to humans, but can survive in external environments for a few hours, maybe a day or two. VZV multiplies in the lungs, and causes a wide variety of symptoms. After the
National Centre for Disease Control centers in India, which started surveillance of HIV infection in the country. On 30 July 2009, it was named as National Centre for Disease Control. NCDc has eight divisions under it namely Doctors from NCDC had been previously summoned to investigate potential outbreaks of diseases including suspected cases of Pneumonic plague in Punjab in 2002, SARS outbreaks in 2004, meningitis outbreak in Delhi in 2005, and avian influenza in 2006. The NCDC in collaboration with the Centers for Disease Control and Prevention has set up the Global Disease Detection Regional Center in New Delhi, India. This will lead to long-term