Mubelesi kuchibbadela muNSW wakali kuchiswa kuzwa mu 2013 kusika mu 2024.
Bakali kukonzya kuchita kuti myaanda yabamatumbu abana bachiswa bulwazi bwa hepatitis B.
Chibbadela chiyoogwasya bamatumbu bali 223 abana bali 143.
Basololi bazyabusilisi bakati balausa.
Hepatitis B ilachisa chitaka.