streptococcus pneumoniae bacteria, 3d scientific

streptococcus pneumoniae bacterium 3d scientific illustration microbiology pathogen bacterial infection grampositive respiratory pneumonia meningitis otitis media sinusitis communityacquired diseases pneumococcal disease antibiotic resistance biofilm formation antimicrobial treatment health infectious medical molecular biology pathogenesis virulence sepsis vaccine immunization childhood elderly population ear sinus conjugate drug therapy clinical pneumococcus pneumococci streptococci bacteria