symptoms of salmonellosis. the structure of salmonella. infographics. on background.

agent anatomy bacilli bacillus bacteria bacterial bacteriology bacterium biology campylobacter cell cocci coli contaminated diarrhea disease epidemic fever flu germ health human hygiene illness illustration infected infection infectious intestine medical medicine micro microbe microbiology microorganism microscopic organism pathogen pathogenic research salmonella salmonellosis science shigella shigellosis spirilla structure vector virus yersinia