After any PEP regimen, World Health Organization recommendations require a NAb value > or =0.5 IU/mL on days 14 and 28. The 1-week PEP regimen, therefore, appears promising. It increased immunogenicity over the 2-site intradermal schedule, and it is convenient and can be used in small clinics, because it consumes almost the entire supplied vaccine ampoule volume.
The present study sought to determine whether increasing and accelerating rabies vaccine administration would result in earlier protective levels of neutralizing antibody. Results indicated that the 8-site and double-dose Thai Red Cross intradermal regimens produced higher antibody titers by day 14 but not significantly higher titers by days 5 and 7. Administration of rabies immunoglobulin into and around bite wounds on the first day of rabies prophylaxis should remain the optimal postexposure treatment.
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