Typhoid fever is caused by bacteria in contaminated food or drink. in 1903, an outbreak of typhoid fever in ithaca, new york, killed almost 80 people. in addition, more than 1,000 ithaca residents became sick with the disease. the population shares the public water source. which type of limiting factor was involved in the typhoid outbreak that occurred in ithaca? density-independent factor density-dependent factor population-dependent factor population-independent factor