Antibiotic Susceptibility of Aerobic and Facultative Anaerobic Gram-Negative Rods in Hong Kong and Implications on Usefulness of Ceftazidime-Avibactam and Ceftolozane-Tazobactam.

Due to the increasing resistance of aerobic and facultative anaerobic Gram-negative rods, ceftazidime-avibactam and ceftolozane-tazobactam have been launched in the market in the last few years. In this study, we analyzed the susceptibility pattern of the major aerobic and facultative anaerobic Gram-negative rods in Hong Kong for ceftazidime-avibactam, ceftolozane-tazobactam, four other broad-spectrum antibiotics commonly used in Hong Kong and colistin. For 300 isolates collected from January to December 2021, non-ESBL-producing Enterobacterales, ESBL-producing Enterobacterales and were highly susceptible to ceftazidime-avibactam (all 100%) and ceftolozane-tazobactam (98.

Streptococcus sp. nov. Infection Associated with Guinea Pigs.

Pet bite-related infections are commonly caused by the pet's oral flora transmitted to the animal handlers through the bite wounds. In this study, we isolated a streptococcus, HKU75, in pure culture from the purulent discharge collected from a guinea pig bite wound in a previously healthy young patient. HKU75 was alpha-hemolytic on sheep blood agar and agglutinated with Lancefield group D and group G antisera.

Susceptibility of Typhoidal, Nontyphoidal, and Extended-Spectrum-β-Lactamase-Producing to Ceftolozane/Tazobactam.

Both typhoidal and nontyphoidal salmonellae are included in the top 15 drug-resistant threats described by the U.S. Centers for Disease Control and Prevention.