Loss of vaccine-induced immunity to varicella over time

Article Abstract:

A study examines whether vaccine-induced immunity to varicella wanes over time and if the severity and incidence of breakthrough varicella increases later in life. Results demonstrate that a second dose of varicella vaccine, recommended for all children in the U.S., could improve protection from both primary vaccine failure and waning vaccine-induced immunity.

Goods & services distribution, Channels of Distribution, Prevention, Development and progression, Distribution, Company distribution practices, Clinical report

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Impact of varicella vaccination on health care utilization

Article Abstract:

An attempt is made to examine the impact of the varicella vaccination program on medical visits and associated expenditures. It is observed that varicella hospitalizations, ambulatory visits, and their associated expenditures have declined dramatically among all age groups in the United States, since the introduction of the varicella vaccination program.

Children, Child health, Immunization

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Contagiousness of varicella in vaccinated cases: a household contact study

Article Abstract:

The attack rates within households according to disease history and vaccination status of the household contacts and estimating the varicelle vaccine effectiveness are described. Under conditions of intense exposure, varicella vaccine was highly effective in preventing moderate and severe disease and about 80 percent effective in preventing all disease.

Evaluation, Drug therapy

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