The swine flu panic has waned in the past few weeks and authorities are breathing a sigh of relief, but some medical experts say the government has been slow to prepare for a possible second outbreak this fall.
Their chief worry is whether there will be enough vaccine.
"We should shift to manufacturing vaccine for swine flu" rather than seasonal flu, said Norio Sugaya, an infectious disease expert and head of pediatrics at Keiyu Hospital in Kanagawa Prefecture.