Wrong about chickenpox:
Highly contagious
Children 5-9 years old are most commonly affected
Incubation period ranges from 2 to 3 days
The hallmark of the infection include the skin lesions--maculopapules, vesicles, and scabs in various stages of evolution
Chickenpox Humans are the only known reservoir for VZV. Incubation period of chickenpox ranges from 10 to 21 days. Secondary attack rates are 70-90%. Patients are infectious ~48 h before onset of the vesicular rash, during the period of vesicle formation (which generally lasts 4-5 days), and until all vesicles are crusted. Clinically, chickenpox presents as a rash, low-grade fever, and malaise, although a few patients develop a prodrome 1-2 days before onset of the exanthem. The skin lesions--the hallmark of the infection--include maculopapules, vesicles, and scabs in various stages of evolution.
Viral infections