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.
Largest cities in New Mexico. 1  Albuquerque. 2  Las Cruces. 3  Rio Rancho.  Santa 1  Fe. Roswell. 2  Farmington. South Valley. 3  Clovis. 4  Hobbs. Alamogordo. 5  Carlsbad. Gallup. 6  Los Lunas. 7  Sunland 8  Park. Deming.  Chaparral.