By Hiroyuki Kachi

The dollar was lower against the yen in Asia trade Friday, with news of a new Ebola patient in New York prompting investors to switch to the perceived safety of the Japanese currency.

At last check, the dollar (USDJPY) slipped to Yen107.99 from Yen108.28 late Thursday in New York. Meanwhile, the euro (EURUSD) was at $1.2652 from $1.2647.

The situation cleared to some extent, as a fresh round of global data including eurozone PMI reduced fears about the global economic slowdown, causing U.S. Treasury yields to rise.

However, news of the Ebola patient fed risk aversion, prompting buying of the yen, considered a safe harbor in uncertain times.

A doctor who returned to New York City recently after treating Ebola patients in West Africa tested positive for the virus Thursday. New York Mayor Bill de Blasio said authorities had been preparing for an Ebola case for weeks and followed new protocols "very precisely."

In addition, investors were reluctant to make major moves ahead of big events such as the outcome of European stress tests scheduled for Sunday, as well as the policy meetings of the Federal Open Market Committee and the Bank of Japan next week.

"The Yen108-level is still a bit too high" given two-year U.S. bond yields are staying below 0.4%, said Minori Uchida, head of Tokyo global markets research at Bank of Tokyo-Mitsubishi UFJ. U.S. yields are a major force for the dollar's upward momentum.

"With the dollar coming back to Yen108 level for the first time in 10 operating days in Tokyo, there are many investors willing to sell," said Uchida. In addition, the news of the Ebola patient hardly provides the kind of environment to keep the dollar at the Yen108-level, he added. However, he noted that investors would likely shrug off the news should the incident be successfully contained.

The dollar will likely remain vulnerable to selling with investors moving to lock in profits, especially outside Japan, as they are sensitive to the risk of terrorism and Ebola and ahead of next week's big events, said Yuji Saito, executive director of foreign exchange at Credit Agricole in Tokyo.

"I expect the dollar to stay stable above the Yen108-level after the FOMC meeting," Saito said.

The dollar will likely keep its uptrend intact next week, despite possible ups and downs after the FOMC decision, he added. He expects the greenback to trade in a Yen107 to Yen110 range.

In other currency trade, the euro was at Yen136.63, compared with Yen136.89.

The WSJ Dollar Index , a measure of the dollar against a basket of major currencies, was down 0.09% at 77.72.

Subscribe to WSJ: http://online.wsj.com?mod=djnwires