Interrelations of Organism Prevalence, Specimen Collection Method, and Host Age, Sex, and Breed among 8,354 Canine Urinary Tract Infections (1969–1995)

Abstract

Selected information was compiled from canine urinalyses and urine cultures conducted between January 1969 and December 1995. Eight thousand three hundred fifty-four microbial isolates (bacteria and fungi) included 4,873 isolates from females and 3,481 from males. Ten bacterial genera accounted for 96.3% of the urinary isolates, including Escherichia coli (44.1%), Staphylococcus spp. (11.6%), Proteus spp. (9.3%), Klebsiella spp. (9.1%), Enterococcus spp. (8.0%), and Streptococcus spp. (5.4%) as the 6 most common isolates in both genders of dogs. Among these 6 genera, female dogs were generally predisposed over males, although males had more urinary tract infections (UTIs) caused by Klebsiella spp. Distributions of ages at UTI diagnosis tended to be similar between genders. Infection with a single microbial species was responsible for >72% of UTIs in both genders. Among females, 40 breeds and a mixed-breed group represented 90.2% of all positive urine cultures, 88.4% of the individual dogs with UTIs. and 88.2% of the microbial isolations. Among males, these same 41 breed groups represented 87.9% of all positive urine cultures, 87.6% of the individual dogs, and 88.2% of the microbial isolations.

Efficacy of single-dose ceftriaxone versus multiple-dose enrofloxacin in dogs with uncomplicated lower urinary tract infection: a randomised clinical trial

“…In both groups, E. coli was the predominant agent causing uncomplicated LUTI (Table 1). Miniature pincher (2) Mongrel (7) Pointer (1) Rottweiler (5) Yorkshire terrier (1) Cairn terrier ( Mongrel (4) Pointer (1) Rottweiler (3) Highland white terrier (3) (Ling et al 2001;Cohn 2003;Seguin et al 2003). In agreement with the literature, E. coli was the most common bacterium (44.18%), followed by Staphylococcus spp.…”

Association between Presence of Urovirulence Factors, Phylogenetic Class, and Antimicrobial Resistance Patterns in 159 Uropathogenic <i>Escherichia coli</i> Samples Isolated from Dogs

“…In two such infections, cystitis and pyelonephritis, Escherichia coli is the most prevalent associated pathogen, accounting for 41% to 51% of cases in dogs [1][2][3][4].…”

Preventing canine urinary tract infection (UTI) using an asymptomatic bacteriuria (ASB) Escherichia coli strain

“…The mean age at diagnosis regardless of sex is approximately 7-8 years (Ling et al, 2001;Cohn et al, 2003).…”

“…As in humans (Johnson et al, 2009a) and cats (Bartges and Barsanti, 2000), the most common pathogen isolated from the canine urinary tract is E. coli, accounting for between 33-55% of isolates obtained from UTI cases (Forrester et al, 1999;Norris et al, 2000;Ling et al, 2001;Cohn et al, 2003;Seguin et al, 2003;Hall et al, 2013;Windahl et al, 2014;Wong et al, 2015) ( Table 1.…”

“…Johnson et al (2001) reported that the majority of 17 canine urine isolates were from E. coli phylogenetic groups B2 or D (triplex PCR), expressed papG allele III, and exhibited numerous other putative virulence genes that are characteristic of human extraintestinal E. coli (ExPEC), rather than representing dog-specific pathogens (Johnson et al, 2001b). A more recent paper examined phylogenetic group distribution in both susceptible and MDR E. coli (12 and 18 isolates, respectively) from canine urinary tract infections and found similarly that the B2 phylo-group accounted for 67% of susceptible isolates and D for 20% (triplex PCR).…”