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, or the City of Mexico, is the capital of Mexico and the most populous city in North America. Mexico City is one of the most important cultural and financial centers in the Americas. It is located in the Valley of Mexico, a large valley in the high plateaus at the center of Mexico, at an altitude of 2,240 metres. The city consists of sixteen boroughs. The 2009 estimated population for the city proper was approximately 8.84 million people, with a land area of 1,485 square kilometres.