The microbiological safety of typical Guatemalan foods from street vendors, low-income homes and hotels

alimentos alimentos preparados bacteria coliforme biological contamination coliform bacteria contamination biologique convenience foods escherichia coli estructura social fast food food hygiene food service foods guatemala higiene de los alimentos hogares households microbial contamination microbiologia microbiologie microbiology prepared foods produit alimentaire restauration collective restauration rapide safety seguridad social structure structure sociale