TY - JOUR
T1 - Distribution of serotypes and antibiotic resistance of invasive Pseudomonas aeruginosa in a multi-country collection
AU - Nasrin, Shamima
AU - Hegerle, Nicolas
AU - Sen, Shaichi
AU - Nkeze, Joseph
AU - Sen, Sunil
AU - Permala-Booth, Jasnehta
AU - Choi, Myeongjin
AU - Sinclair, James
AU - Tapia, Milagritos D
AU - Johnson, J Kristie
AU - Sow, Samba O
AU - Thaden, Joshua T
AU - Fowler, Vance G
AU - Krogfelt, Karen A
AU - Brauner, Annelie
AU - Protonotariou, Efthymia
AU - Christaki, Eirini
AU - Shindo, Yuichiro
AU - Kwa, Andrea L
AU - Shakoor, Sadia
AU - Singh-Moodley, Ashika
AU - Perovic, Olga
AU - Jacobs, Jan
AU - Lunguya, Octavie
AU - Simon, Raphael
AU - Cross, Alan S
AU - Tennant, Sharon M
N1 - FTX; DOAJ; (CC BY 4.0); © 2022. The Author(s).
PY - 2022
Y1 - 2022
N2 - BACKGROUND: Pseudomonas aeruginosa is an opportunistic pathogen that causes a wide range of acute and chronic infections and is frequently associated with healthcare-associated infections. Because of its ability to rapidly acquire resistance to antibiotics, P. aeruginosa infections are difficult to treat. Alternative strategies, such as a vaccine, are needed to prevent infections. We collected a total of 413 P. aeruginosa isolates from the blood and cerebrospinal fluid of patients from 10 countries located on 4 continents during 2005-2017 and characterized these isolates to inform vaccine development efforts. We determined the diversity and distribution of O antigen and flagellin types and antibiotic susceptibility of the invasive P. aeruginosa. We used an antibody-based agglutination assay and PCR for O antigen typing and PCR for flagellin typing. We determined antibiotic susceptibility using the Kirby-Bauer disk diffusion method.RESULTS: Of the 413 isolates, 314 (95%) were typed by an antibody-based agglutination assay or PCR (n = 99). Among the 20 serotypes of P. aeruginosa, the most common serotypes were O1, O2, O3, O4, O5, O6, O8, O9, O10 and O11; a vaccine that targets these 10 serotypes would confer protection against more than 80% of invasive P. aeruginosa infections. The most common flagellin type among 386 isolates was FlaB (41%). Resistance to aztreonam (56%) was most common, followed by levofloxacin (42%). We also found that 22% of strains were non-susceptible to meropenem and piperacillin-tazobactam. Ninety-nine (27%) of our collected isolates were resistant to multiple antibiotics. Isolates with FlaA2 flagellin were more commonly multidrug resistant (p = 0.04).CONCLUSIONS: Vaccines targeting common O antigens and two flagellin antigens, FlaB and FlaA2, would offer an excellent strategy to prevent P. aeruginosa invasive infections.
AB - BACKGROUND: Pseudomonas aeruginosa is an opportunistic pathogen that causes a wide range of acute and chronic infections and is frequently associated with healthcare-associated infections. Because of its ability to rapidly acquire resistance to antibiotics, P. aeruginosa infections are difficult to treat. Alternative strategies, such as a vaccine, are needed to prevent infections. We collected a total of 413 P. aeruginosa isolates from the blood and cerebrospinal fluid of patients from 10 countries located on 4 continents during 2005-2017 and characterized these isolates to inform vaccine development efforts. We determined the diversity and distribution of O antigen and flagellin types and antibiotic susceptibility of the invasive P. aeruginosa. We used an antibody-based agglutination assay and PCR for O antigen typing and PCR for flagellin typing. We determined antibiotic susceptibility using the Kirby-Bauer disk diffusion method.RESULTS: Of the 413 isolates, 314 (95%) were typed by an antibody-based agglutination assay or PCR (n = 99). Among the 20 serotypes of P. aeruginosa, the most common serotypes were O1, O2, O3, O4, O5, O6, O8, O9, O10 and O11; a vaccine that targets these 10 serotypes would confer protection against more than 80% of invasive P. aeruginosa infections. The most common flagellin type among 386 isolates was FlaB (41%). Resistance to aztreonam (56%) was most common, followed by levofloxacin (42%). We also found that 22% of strains were non-susceptible to meropenem and piperacillin-tazobactam. Ninety-nine (27%) of our collected isolates were resistant to multiple antibiotics. Isolates with FlaA2 flagellin were more commonly multidrug resistant (p = 0.04).CONCLUSIONS: Vaccines targeting common O antigens and two flagellin antigens, FlaB and FlaA2, would offer an excellent strategy to prevent P. aeruginosa invasive infections.
U2 - 10.1186/s12866-021-02427-4
DO - 10.1186/s12866-021-02427-4
M3 - A1: Web of Science-article
C2 - 34991476
SN - 1471-2180
VL - 22
SP - 1
EP - 12
JO - BMC Microbiology
JF - BMC Microbiology
IS - 1
M1 - 13
ER -