Was Jessie more at risk of disease by virtue of living at the 'rest' station?

The newsletters of the PIVM record faithfully which missionaries went to Mahabeleshwar station for rest, many of them were suffering from ill health and went there to recuperate physcially as well as spiritually.  It is possible that this increased the risk of workers at the station contracting disease as many of these missionaries were in the convalescent or prodromal (and hence infectious) stages of illness.