Asian shares fell for a third straight day on Wednesday as weak manufacturing reports from China, the United States and Europe fueled worries about slowing global growth, while the dollar took back some ground lost in the previous session to the safe-haven Japanese yen. MSCI’s broadest index of Asia-Pacific shares outside Japan was down 0.4 percent, though off session lows, taking its losses to 3 percent so far this week as investors dumped emerging market assets. Japan’s Nikkei was down 0.5 percent.