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2004 JUN 2 - (NewsRx.com & NewsRx.net) -- Researchers have verified components of acellular pertussis vaccines that have been distributed solely, been in routine use for the last two decades and contributed greatly to control of pertussis in Japan.
"An ideal acellular pertussis vaccine is now under investigation worldwide. We have had acellular pertussis vaccines available for the last 22 years, which contributed greatly to the control of pertussis in Japan, although it has not been known whether they are one of ideal acellular pertussis vaccines or not. Moreover, the formulations of acellular pertussis vaccines that we have been using have not been widely recognized," researchers in Japan report.
"Serum samples were taken from recipients of the T type, B type, and two-component acellular pertussis vaccine and assayed by ELISA for anti-PT, anti-FHA, and anti-69 kD OMP antibody levels and by the agglutination test," said Harumi Kuno-Sakai and collaborators at Tokai University and Takeda Chemical Industries, Ltd. "Although it was shown that T type vaccine contained four components (PT, FHA, 69 kD OMP, agglutingen), B type vaccine contained three components (PT, FHA, 69 kD OMP) and the two-component vaccine contained PT and FHA, it was concluded that PT and FHA were essential and common ...
Source: HighBeam Research, Components of acellular pertussis vaccines in Japan verified.