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  • Title: Routine immunisation against chickenpox. Is it time?
    Author: Hong CY, Goh LG.
    Journal: J Singapore Paediatr Soc; 1992; 34(1-2):57-66. PubMed ID: 1303469.
    Abstract:
    Natural varicella in healthy children is normally not a severe illness. Nevertheless, the need to be away from school such as during an important examination, or from work, may be inopportune. It is therefore attractive to be able to prevent chickenpox. Such a proposition became a reality in 1974 with the development of a live attenuated varicella vaccine (the Oka strain). This has since been used in leukaemic children and children with other malignancies, and found to be safe and effective. Some of these children were immunised without complete suspension of anticancer therapy. The vaccine has also been used on healthy children and adults, mainly in Japan and North America. The results too indicated the vaccine to be safe and immunogenic, with minimal side effects. It has been shown to confer protection even if given within 3 days of exposure. The occurrence of zoster appears to be no higher than in natural infection. The vaccine has so far been shown to be protective up to 10 years post-immunisation. It appears safe enough to offer the vaccine routinely to those who are at risk of infection. One dose of vaccine given subcutaneously is usually sufficient for healthy children, but two doses are needed for immunocompromised children and adults.
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