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Attempted vaccination of jirds (Meriones unguiculatus) against Brugia pahangi with radiation attenuated infective larvae

Published online by Cambridge University Press:  05 June 2009

W. Chusattayanond
Affiliation:
Department of Microbiology, Mahidol University, Rama VI Road, Bangkok 10400, Thailand
D. A. Denham
Affiliation:
London School of Hygiene and Tropical Medicine, Keppel Street, London WC13 7HT, England

Abstract

Jirds were vaccinated by three to five subcutaneous (SC) injections of infective larvae of Brugia pahangi which had been irradiated at 25, 45 or 90 krads from a 60Co source. They were challenged either SC or intraperitoneally. Vaccination with four doses of 50 larvae irradiated with 25 krads produced 49·3% resistance to IP challenge worms and 39·8% against SC challenge worms. Five doses of larvae irradiated with 45 krads produced 62% resistance to SC challenge. Three doses of larvae irradiated with 90 krads produced 74·9% resistance to SC challenge and five doses produced 76·2% resistance. The reasons why irradiated larvae produce resistance whereas normal larvae do not are discussed.

Type
Research Papers
Copyright
Copyright © Cambridge University Press 1986

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