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Pneumococcal Disease
Reports outline pneumococcal disease study results from G. Gherardi et al
February 25th, 2009
According to a study from Rome, Italy, "A total of 773 pneumococcal isolates were collected from a nationwide surveillance of invasive pneumococcal diseases during 1999-2003 prior to the implementation of the 7-valent conjugate vaccine (PCV7) in Italy. The isolates included vaccine serotypes (VS, 393 isolates), vaccine-related serotypes (VRS, 93), and nonvaccine serotypes (NVS, 279)." "The ten most prevalent serotypes were: 14 (16.4%), 3 (8.4%), 23F (8%), 19F (7.4%), 4 (5.9%), 7F (5.8%), 9V (5.3%), 6B (4.9%), 19A (4.7%), and 1 (3.7%). VRS or NVS isolates showed a lower rate of penicillin or drug resistance than VS. Representative isolates of the major VS, VRS, and NVS...
Source: Vaccine Weekly (2009-02-25)
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