The phrase "pathogenic strains" refers to specific types of microorganisms (like bacteria or viruses) that can cause diseases or infections in living organisms. Full definition
The probiotic strains get mixed with pathogenic strains of E. coli, listeria, salmonella, etc. that are found highly prevalent in these farms where antibiotics are heavily used. (microbiomelabs.com)
To minimize future risk, ideally, the CDC wants to limit the number of facilities working with highly pathogenic strains in the long term, Frieden says. (scientificamerican.com)
Compared to healthy people, ICU patients had depleted populations of commensal, health - promoting microbes and higher counts of bacterial taxa with pathogenic strains — leaving patients vulnerable to hospital - acquired infections that may lead to sepsis, organ failure and potentially death. (sciencedaily.com)