This answer might be coming a little bit late, but hopefully it can help someone in the future. SFootDB is the largest publicly available gait database, CASIA-D is also a great underfoot pressure database, and there is a database available from UoM that also has underfoot pressure.
It is a bit tricky to find up to date data/ infos concerning the travel restrictions. Best place to look for infos is the health ministry website of the country in question. For example:
Tunisia : offers a pdf list updated continuously with 3 categories, each with each set of restrictions.
UK : publishes an up-to-date list of exempted countries (from self-...