"Just exploring microbes in the environment also is benefiting [and] training our immune system," Warren says. "Our immune systems get trained through the foods that we eat, which also have microorganisms on them.  
"Kufufuza tizilombo m'malo omwe atizungulira ndikofunika komanso kumalimbitsa chitetezo chathu cha mnthupi," anatero a Warren. "Chitetezo cha mnthupi chimalimba kudzera mu zakudya zomwe timadya, zomwenso zimakhala ndi tizilombo.