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© 1977 Oxford University Press
research-article |
Space-time and Family Characteristics of Meningococcal Disease and Haemophilus Meningitis
1 Lecturer in Social and Community Medicine, University of Oxford, 8 Keble Road, Oxford OX1 3QN
Significant space-time clustering wasfound forcases of meningococcal disease. This result was entirelyaccounted for by the occurrence of a small number of sibling pairs, and clustering was no longer found when these were omitted from the analysis. Menlngococcal disease should still be regarded as potentially communicable between siblings. However, in this region of England the current level of Infectivity of the disease outside the family is low. Space-time clustering was not convincingly demonstrated for haemophilus meningitis. This emphasizes that, even with diseases of known microbial aetiology, evidence for such clustering may be difficult to obtain.
Only a small number of cases of haemophilus meningitis occurred in single-child families. Cases in single-child families tended to occur in older children than the remainder. Although children under three years of age are most susceptible to haemophllus meningitis, it Is likely that the organism is usually introduced into the family by an older sibling.
Received 21 January 1977
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