Journal
INFECTION AND IMMUNITY
Volume 72, Issue 3, Pages 1807-1811Publisher
AMER SOC MICROBIOLOGY
DOI: 10.1128/IAI.72.3.1807-1811.2004
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Funding
- NIAID NIH HHS [N01AI25469] Funding Source: Medline
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To investigate the role of innate immunity in variable efficacy of Mycobacterium bovis BCG vaccination in Malawi and the United Kingdom, we examined 24-h tumor necrosis factor alpha, interieukin-1beta (IL-1beta), and IL-10 responses to mycobacterial purified protein derivatives (PPDs). The rank order in stimulatory potency for different PPDs was the same for all three cytokines. Before vaccination Malawians made higher pro- and anti-inflammatory responses than did United Kingdom subjects. Fewer than 5% of United Kingdom subjects made IL-10 in response to any PPD, compared to 19 to 57% responders among Malawians. Priming for regulatory IL-10 may contribute to the smaller increase in gamma interferon responses in Malawians compared to United Kingdom subjects following BCG vaccination.
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