Hi Oxxa,Apologies its taken me some time before I could look...

Hi Oxxa,

Apologies its taken me some time before I could look into this one for you, there is some material out there on the internet in regards to DOD and Chikungunya. There isn't much on the DOD and RRV as RRV seems to be mainly prevalent In Aussie and the South Pacific. But we know of similarities between the two conditions as numerous reports have mentioned.

Below is an article that mentions the collaboration between DOD and the FDA and mentions Chikungunya.

Also here is an extract in regards to the efforts of researching into this and other disease outbreaks:

Chikungunya virus, dengue virus, Crimean Congo hemorrhagic fever virus, Lassa virus, Venezuelan equine encephalitis virus, Eastern equine encephalitis virus and many others are among the viruses for which USAMRIID is creating medical countermeasures for warfighter and public-health protection. All of these pathogens can be classified as creating emerging or re-emerging infectious diseases in people, and most originate in animals and cross over to people.¹

Article

https://www.fda.gov/emergency-preparedness-and-response/mcm-regulatory-science/us-department-defense-and-fda-collaborate-help-speed-potential-countermeasures-ebola-and-other

Reference
1) https://dod.defense.gov/News/Article/Article/603556/