Discovery of wartime disease transmitted by lice prompts calls for more to be done for vulnerable
A disease transmitted by body lice that plagued soldiers during the first world war has been identified in a former homeless man in Canada, prompting calls for more to be done to improve conditions for vulnerable people.
Trench fever is caused by the bacterium Bartonella quintana and is spread by the faeces of body lice. The condition became rife among armies and is thought to have affected more than a million troops during the 1914-18 conflict.