Only toward the end of the 19th C. did strictly enforced quarantines work to stop the spread of diseases out of the region, back to the homes of the pilgrims.
Kufikia mwisho wa karne ya 19 W.K. tu ndipo wagonjwa waliolazimishwa kutoka nje ya eneo hilo walifanya kazi ili kuzuia kuenea kwa magonjwa, na kurudi kwenye nyumba za mapilgrimu.