Prime Minister Daniel Duncan signed the order that closes the land borders Ivory Coast shares with Guinea and Liberia.
The borders will remain closed until further notice in an effort to prevent the Ebola virus from spreading into its territory, according to the government statement.
The announcement comes the same day the British government announced one of its citizens was infected with the deadly virus.
The Briton, who lives in the West African nation of Sierra Leone, tested positive for the Ebola virus, according to Britain's Department of Health.
The man, simply identified as "William," was living in a home established by an American university for researchers in Sierra Leone.
"William" was a volunteer nurse in Kenema Government Hospital and was working with Ebola patients in the hospital, according to Dr. Robert Garry of Tulane University. Garry is manager of the university's program that researches Ebola. The hospital is run by the government of Sierra Leone, but receives support from Tulane researchers.
Garry said that no one else living in the house was "significantly exposed" and "William" is still in Sierra Leone.
According to the Tulane doctor, "William" got sick on Friday and had a low viral load, meaning he wasn't infected for a long time. Garry added that the British national has a fever but none of the other symptoms of the Ebola virus.
In a statement on the United Kingdom's government website Saturday, British Chief Deputy Medical Officer John Watson said the overall risk to the public in the UK is very low.
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