Mankhwala osamalira khungu omwe timagwiritsa ntchito tsiku ndi tsiku amakhala ndi zinthu zotetezera, chifukwa tikukhala m'dziko lomwelo ndi mabakiteriya, kotero kuti kuthekera kwa matenda ndi mabakiteriya akunja kumakhalanso kochuluka, ndipo ogula ambiri ndi ovuta kwambiri kuchita opaleshoni ya aseptic. ..
Werengani zambiri