... non-specific pathogenic microorganisms, including exposure to infectious agents, including Streptococcus agalactiae, Staphylococcus aureus, and mycoplasma, environmental pathogens, including: Escherichia coli, Klebsiella ... , the use of oligomeric chitosan sugar instead of antibiotics and antimicrobial agents, prevention and treatment of mastitis in dairy cows reason: 1 Chitosan ...