Acyclovir in the treatment of chickenpox.

Although chickenpox is a highly contagious disease affecting 90% of susceptible persons exposed, its morbidity and mortality in healthy patients is minimal. Treatment of chickenpox with oral acyclovir appears to decrease the number of pox lesions and shorten the duration of new lesion formation. Most importantly, children treated with acyclovir begin to feel better soon and had fewer systemic signs and symptoms of chickenpox (fever, fatigue, loss of appetite). However, the greatest mortality from chickenpox is seen in the immunocompromised patient, or in elderly patients with zoster (shingles) due to reactivation of latent varicella infection. Therefore, prevention of varicella is necessary to decrease mortality from the varicella-zoster virus. It is hopeful that the varicella vaccine will be licensed in the U.S. for routine immunization of healthy children within the next year. While its general use will not eliminate either chickenpox or zoster, there will be a considerable decrease in the morbidity and mortality caused by this agent as a result of routine immunization.