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2003: Suzuki Kyoko; Yoshikawa Tetsushi; Ihira Masaru; Ohashi Masahiro; Suga Sadao; Asano Yoshizo
Spread of varicella-zoster virus DNA to the environment from varicella patients who were treated with oral acyclovir.
Pediatrics international : official journal of the Japan Pediatric Society 2003;45(4):458-60.
OBJECTIVE: The purpose of the present study was to determine the degree of spread of varicella-zoster virus to the environment (VZV) from varicella patients who received oral acyclovir treatment. METHODS: Over a period of 8 months, seven healthy children (two girls and five boys, 23-64 months of age) with varicella who visited Fujita Health University School of Medicine were treated with routine doses of oral acyclovir (ACV) for 5 days, commencing within 24 h after onset of the disease. Swab samples from the throats of patients and their family members as well as from air purifier filters in their houses were collected for 7 days as frequently as possible after starting treatment for the disease. The VZV DNA in the samples was identified by a sensitive polymerase chain reaction amplification assay. RESULTS: The VZV DNA was detected in 33-100% of throat swab samples from varicella patients by day 7 of the disease, in 17-32% of throat swab samples from family members by day 4 and in 29% of filters from air purifiers by day 3. CONCLUSIONS: The results suggest a broad spread of VZV, probably by the airborne route, from the patients with varicella even after the administration of oral ACV.

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