Medieval diseases lurk in LA: 124 cases of Typhus are confirmed | Daily Mail Online

Medieval diseases lurk in LA: 124 cases of Typhus are confirmed | Daily Mail Online

Fleas carry Typhus from infected stray animals. Though rats are most often attributed with the disease, any stray animal like cats or opossums can also be carriers 

https://www.dailymail.co.uk/news/article-7375793/Medieval-diseases-lurk-LA-124-cases-Typhus-confirmed.html

A brief history of typhus as a epidemic

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Depiction of typhus outbreak in Byzantine Empire

Typhus – European History of Diseases

https://sites.google.com/a/medwayschools.org/european-history-diseases/assignments

 

British Guard post at Belson Camp WWII

I really don’t think there is to much to add.  Typhus is treatable and 124 cases (known and confirmed), if spread out over time, the local medical institutions SHOULD be able to handle it. You are talking about a population that mostly has a basic mistrust of government and may hide from treatment, thus spreading it even further.