The re-emergence of Streptococcus suis: a podcast episode

Podcasts are a perfect way to get caught up with new swine information! We are presenting you the latest episode from “At The Meeting… Honoring Dr. Bob Morrison” in collaboration with SwineCast.

In this new episode, our hosts invited Dr. Maria Clavijo from Iowa State University Veterinary Diagnostic Laboratory and Dr. Adam Schelkopf from Pipestone Services to discuss the various new diagnostic techniques to identify differences in Streptococcus suis strains.

Continue reading “The re-emergence of Streptococcus suis: a podcast episode”

Antimicrobial resistance in swine respiratory bacterial pathogens in the USA

On this Monday morning, we would like to share with you this article published in Research in Veterinary Science by PhD-candidate Shivdeep Hayer advised by Dr. Julio Alvarez. The peer-reviewed publication is a summary of antimicrobial resistances (AMR) in swine respiratory isolates between 2006 and 2016.

Highlights

  • AMR data for bacterial swine pathogens associated with Swine Respiratory Disease Complex are lacking
  • AMR data on swine bacterial pathogens collected over 11 years in the U.S.A was analyzed for changes in AMR prevalence
  • AMR in S. suis and P. multocida isolates mostly remained low
  • There were statistically significant changes in AMR in A. suis and H. parasuis
  • Use of surrogate breakpoints can lead to different AMR estimates for certain bacteria
Continue reading “Antimicrobial resistance in swine respiratory bacterial pathogens in the USA”

Streptococcus suis strains circulating in the U.S. and their association with pathogenicity

Key Points

  • Streptococcus suis isolates were classified into 20 different serotypes and 58 different Sequence types (ST)s.
  • Serotypes 1 and 1/2 were associated with higher pathogenic frequency, while ST profiles 1 and 28 were associated with higher frequency of pathogenic isolates.
  • The analysis of the association between pathotype, serotype, and ST showed that overall, STs were a better predictor of pathogenicity than serotypes.
Continue reading “Streptococcus suis strains circulating in the U.S. and their association with pathogenicity”

Can Streptococcus suis genotype predict its pathogenicity?

PhD candidate April Estrada, working with Drs. Gebhart and Marthaler published an open-access article on Streptococcus suis in the Journal of Clinical Microbiology. Streptococcus suis is an older pathogen but its prevalence as well as its virulence have been rising lately. This study investigates if categorizing isolates into serotypes and genotypes could help predict the severity of the disease on the farm.

Continue reading “Can Streptococcus suis genotype predict its pathogenicity?”

Distribution of pathogenic Streptococcus suis in the US

In this article written for the National Hog Farmer, PhD candidate April Estrada describes the high diversity of Streptococcus suis (S.suis) isolates.

Continue reading “Distribution of pathogenic Streptococcus suis in the US”