Outbreaks of typhoid and dysentery spread through contaminated food and water. Soldiers contracted influenza and pneumonia, while still others succumbed to typhus, caused by body lice. Although the inconsistent delivery of food rations did not cause starvation, it probably exacerbated the health of ailing soldiers. Some patients might have suffered from more than one ailment. In total, about 1,700-2,000 troops died during the Valley Forge encampment, mostly at general hospitals located in six different towns. Valley Forge had the highest mortality rate of any Continental Army encampment, and even most military engagements of the war.