Let me add a few big infectious disease concerns:
Rapidly rising AIDS throughout the FSU, especially in Ukraine.
No ability or ineffective ability to screen blood supply for all pathogens ie. Hepatitis A / B; AIDS. Luckily, blood is normally not banked in the FSU due to a variety of problems ie. ineffective temperature controls, faulty containment, inappropriate bags etc.
New and relatively unknown antibiotic resistant strains of TB, especially in the far East of Russia.
Tickborne Encepalitis much more prevalent than the West in the South FSU regions ie. stay out of the forests in the South of Russia from May through August.
Here are some more:
Crumbling buildings throughout many cities without recent inspections. Elevators that can go out at any time. Think of a place with many infrastructure problems and you have the FSU in a nutshell.
No leash laws on dogs often can lead to confrontations with stray dogs. Rabies is always a concern.
Still, we make the trek and thrive, as do most people in the FSU. Most peoples problems which lead to the lower lifespans are accidents, alcoholism, poor choice of available foodstuffs and inadequate or low quality health care system. Somehow most people get by the infrastructure problems, but they are a growing concern amongst the have nots, which is the majority of the population.