Border controls Authorities in Sistan-Baluchistan province said on Wednesday that they had closed travel across the border with Pakistan until further notice, although goods transport by road would be permitted.
On Saturday, Alireza Raisi, the spokesman for the anti-virus taskforce, called for "strict controls of the country's borders", especially those on the eastern side of Iran.
Strangled by US sanctions that have made it difficult to transfer money to foreign firms, Iran says it is struggling to import vaccines for its population of 83 million.
Just over 4.4 million people have received a first dose of anti-Covid vaccine in Iran, while only 1.7 million have received the necessary two jabs, the health ministry says. "God willing,