Chickenpox is an illness caused by the varicella zoster virus (VZV), which is a member of the herpesvirus family.The illness lasts between 5 and 10 days causing an itchy, blister-like rash, fever, headache, fatigue, and loss of appetite.hickenpox is an illness caused by the varicella zoster virus (VZV), which is a member of the herpesvirus family.
Mexicoâs ten largest cities (2009 population) are: Mexico City 19,982,000 (Metropolitan Area) Guadalajara 4,365,000. Monterrey 3,986,000. Puebla 2,647,000.
Mexico City. Mexico City, the country's capital, lies in the centre of southern Mexico. Mexico City is home to a temperate high land climate, which results from its tropical location and its relatively high elevation. The south region of greater Mexico City sits at higher altitudes; as a result this part of the city receives greater rainfall and sees a wider range in daily temperatures.