(1) Causative agent: Salmonella typhi
(2) Mode of Transmission:
(i) It is a food and water borne disease.
(ii) Insects like housefly and cockroaches feeding on fecal matter, may transfer the bacteria to food material.
(iii) Poor hygiene habits and poor sanitation conditions are responsible for the spread of typhoid.
(3) Symptoms of typhoid :
(i) Prolonged fever as high as 104°F.
(ii) General nausea, fatigue, headache.
(iii) Abdominal pain, constipation or diarrhoea.