oral bacteria

streptococcus bacteria streptococcal infections grampositive bacterial outbreak spherical streptococcaceae cell division growing chains infectious disease diseases pyogenes strep throat sinus flesheating pathogen pathology pathogenic group streptolysin antibiotic resistance superbug invasive spreading bacillota lactobacillales medicine contagiuos contagion bacteriumhalitosis bad breath oral microbiota microscopic microorganism mouth germs bacteriology