Sierra Leone has deployed troops to guard quarantined Ebola patients as Saudi Arabia's first suspected case sparked fears of a possible global spread and British Airways cancelled flights to two west African countries.
A presidential aide in Sierra Leone told AFP the soldiers would "deter relatives and friends of Ebola patients from forcefully taking them from hospitals without medical consent".
Ebola, a deadly tropical virus that causes severe fever and, in the worst cases, unstoppable bleeding, has claimed the lives of almost 900 people in four west African nations since the start of the year.
Sierra Leone has seen 646 cases, the highest number of any nation, and 273 deaths.
But the fight against its spread has been hampered by distrustful relatives discharging highly contagious patients from hospitals and taking them back to die in their villages, where countless individuals may have contact with them.
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Many indigenous people living in the forested border areas that straddle Sierra Leone, Liberia and Guinea believe the virus was introduced deliberately by outsiders, or is a hoax fabricated by the West, designed to subjugate them.
The presidency did not give exact numbers or locations for the army deployment, but most of the country's Ebola clinics are in Kailahun and Kenema, the eastern districts hit hardest by the outbreak.
The announcement came after British Airways said it had suspended flights to Liberia and Sierra Leone until the end of August "due to the deteriorating public health situation in both countries".
"The safety of our customers, crew and ground teams is always our top priority and we will keep the routes under constant review in the coming weeks," it said in a statement.
The threat of a spread outside of Africa was underlined as Saudi Arabia said doctors were testing a patient suspected of having contracted Ebola during a trip to Sierra Leone.
The health ministry said the Saudi man was admitted to hospital in the Red Sea city of Jeddah after showing Ebola-like symptoms upon his return.
Meanwhile, an American woman infected with Ebola - the second US patient evacuated from the growing outbreak in west Africa - arrived on Tuesday in the US from Liberia for treatment.
After landing at a military air strip aboard a small medical evacuation plane, Nancy Writebol, 60, was transported by ambulance to Emory University Hospital in Atlanta, Georgia.
Missionary doctor Kent Brantly, 33, is also receiving care at a special containment unit at the same hospital.
Three foreign missionaries - a Spaniard, a Congolese and an Equatorial Guinean - have also tested positive for the virus in the Liberian capital Monrovia, the Spanish charity St John of God said Tuesday.
They were named as Spanish priest Miguel Pajares, 75, Chantal Pascaline Mutwamene of Congo and Paciencia Melgar of Equatorial Guinea.
Spain's defence ministry said it was sending an air force plane to Liberia to bring Pajares home for treatment.
