Russia’s state veterinary service has lifted a ban on imports of poultry from the US states of Arizona, California, Nevada and Texas.

The bans had been imposed in April after cases of Exotic Newcastle Disease were reported in those states.

According to Russia’s chief veterinary inspector, Evgeny Nepoklonov, US officials had provided guarantees that the disease had been eliminated from the four states, reported Dow Jones News.

US poultry exports to Russia are 1.3 million metric tons a year on average.

Exotic Newcastle Disease is a highly contagious avian virus that is harmless to humans.