What vaccinations are obligatory to get a Russian visa, if any? Is it easy to get access to medications I use at home or should I take them with me?
Generally, Russia is the same as any European country in terms of health risks. So, if you're OK living in Europe, US, Canada, Australia or elsewhere you don't need to take any special preventive measures before coming to Russia.
No vaccinations are required for entry in Russia, however, if you're coming to Russia for longer than 3 months, some Russian consulates will require an AIDS certificate before issuing your visa.