Fa'avasegaina: O vaila'au fa'ama'i fa'ama'i e vaevaeina i ni vaega se lua: vaila'au fa'ama'i ma vaila'au fa'ama'i fa'ama'i. O vailaʻau e taʻua o vailaʻau o metabolites e gaosia e microorganisms,  lea e mafai ona fa'alavelaveina le tuputupu a'e po'o le fasiotia o isi meaola ninii.  O vailaʻau faʻamaʻi faʻamaʻi e taʻua o vailaʻau antibacterial o mea faʻamaʻi e gaosia e tagata e ala i vailaʻau faʻasolosolo, e le gaosia e le microbial metabolism.

Antibiotics: O vailaau faʻamaʻi e masani ona vaevaeina i ni vaega se valu: 1. Penicillins: penicillin, ampicillin, amoxicillin, etc.; 2. Cephalosporins (pioneermycins): cephalexin, cefadroxil, ceftifur, cephalosporins, ma isi; 3. Aminoglycosides: streptomycin, gentamicin, amikacin, neomycin, apramycin, ma isi; 4. Macrolides: erythromycin, roxithromycin, tylosin, ma isi; 5. Tetracyclines: oxytetracycline, doxycycline, aureomycin, tetracycline, ma isi; 6. Chloramphenicol: florfenicol, thiamphenicol, ma isi; 7. Lincomycins: lincomycin, clindamycin, ma isi; 8. Isi vaega: colistin sulfate, ma isi.