Characteristics of Aerococcus viridans isolated from porcine fetuses in Korean farms.

Swine abortion caused by viruses as well as bacteria has caused many economic losses in domestic farms over the years; however, bacterial abortion has not yet been studied in Korea. Several bacterial species were isolated from aborted fetuses (n = 103) for which the cause of death was not viral abortion. Among them, we focused on Aerococcus viridans, which had the highest positive rate within three provinces (Gangwon, Jeonnam and Gyeongnam).

In vitro activities of antimicrobials against six important species of gram-negative bacteria isolated from raw milk samples in Korea.

Gram-negative bacteria (GNB) with multidrug resistance pose a serious threat to public health. They are environmental pathogens frequently isolated from raw milk and mastitis in dairy cattle. This study was to examine the in vitro antimicrobial activities against 225 isolates belonging to six important species of GNB from mastitic raw milk samples of dairy herds in the Republic of Korea: Acinetobacter baumannii (n = 17), Citrobacter freundii (n = 19), Enterobacter cloacae (n = 54), Klebsiella pneumoniae (n = 55), Pseudomonas aeruginosa (n = 45), and Serratia marcescens (n = 35).

Antimicrobial resistance of streptococci isolated from mastitic bovine milk samples in Korea.

The aim of this study was to determine the antimicrobial resistance of streptococci isolated from mastitic bovine milk samples. A total of 178 isolates belonging to 6 different Streptococcus species were examined: S. uberis (n = 99), S.