Prevalence of Haemophilus parasuis serovars isolated in Spain from 1993 to1997

From 1993 to 1997, 327 strains of Haemophilus parasuis were isolated from s panish swine in our Diagnostic Laboratory and 174 strains (53.2%) were sero typed. Four serotypes, sv. 5 (18.4%), sv 4 (16%), sv. 2 (9.2%) and sv. 13 ( 8%) were the most frequently isolated and 29.3% of the studied strains were classified as non typable. The results obtained indicate that the distribu tion of the serotypes in Spain is very similar to that found by other resea rchers in Germany, Australia, Canada and alike to that found in the United States. (C) 1999 Elsevier Science B.V. All rights reserved.