Faculty of Health Sciences
Department of
and Molecular Medicine

Astrid K. Petrich, PhD

Associate Professor
Pathology and Molecular Medicine

St. Joseph's Healthcare
L424 St. Luke's Wing
Hamilton, Ontario
905-522-1155 ext 33270


Education and Professional Standing

PhD Microbiology, University of Alberta, 1993
BSc Microbiology, University of Alberta, 1988

Research Interests

Using nucleic acid amplification technology for detection of Chlamydia pneumoniae, Chlamydia-like organisms and other respiratory pathogens (M. tuberculosis, S. pneumoniae, Legionella spp., M. pneumoniae) in clinical specimens from patients with respiratory disease.

Using nucleic acid amplification and rapid DNA sequencing technology for typing, identifying, and characterising infectious agents that may impact on the onset or progression of chronic diseases such as COPD and cardiovascular disease.

Optimization of molecular diagnostics for use in the clinical microbiology laboratory and evaluation of their impact on patient care.

Affiliation with Research Centres

Father Sean O-Sullivan Research Center

Antimicrobial Research Center

Team Members

Research Assistant: Sue Carruthers

Lab Technicians: Kathy Luinstra, Sylvia Chong

Selected Publications

Smieja, M., Mahony, J., Petrich, A., Boman, J., and M. Chernesky. 2002. Association of Circulating Chlamydia pneumoniae DNA with Cardiovascular Disease: A Systematic Review. BMC Infectious Diseases 2:21.

Smieja M, Leigh R, Petrich A, Chong S, Kamada D, Hargreave F.E., Goldsmith, C.G., Chernesky, M.A., and J.B. Mahony. 2002. Smoking, Season, and Detection of Chlamydia pneumoniae DNA in Clinically Stable COPD Patients. BMC Infectious Diseases 2:12.

Chernesky, M., Smieja, M., Schachter, J., Summersgill, J., Schindler, L., Solomon, N., Campbell, K., Campbell, L., Cappucio, A., Gaydos, C., Chong, S., Moncada, J., Phillips, J., Jang, D., Wood, B.J., Petrich, A., Hammerschlag, M., Cerney, M. and J. Mahony. 2002. Comparison of an industry derived LCx Chlamydia pneumoniae PCR research kit to in-house assays performed in five laboratories. J. Clin. Microbiol. 40:2357-2362.

Page, B., Petrich, A., Stevens, D., Luinstra, K., Callery, S., Gafni, A., Mahony, J., Chernesky, M., and D. Groves. 2002. Training and implementation of molecular diagnostics for MPCR identification of vancomycin resistant enterococci (VRE) in a clinical microbiology laboratory. Diagn Microbiol Infect Dis. 42:91-97.

Petrich, A., Luinstra, K., Page, B., Callery, S., Stevens, D., Gafni, A., Groves, D., Chernesky, M., and J. Mahony. 2001. Effect of routine use of multiplex PCR for detection of vanA- and vanB- mediated enterococcal resistance on accuracy, costs and earlier reporting. Diagn. Microbiol. Infect. Dis. 41:215-220.