Survivors of the Java coast tsunami tried to return to normal life amidst the rubble of disaster on Thursday despite aftershocks that continued to spread fear and anxiety.
Tens of thousands displaced by the disaster were housed in temporary shelters, and officials and aid workers said they were generally getting adequate care.
In the beach town of Pangandaran, fishermen combed through debris, searching for nets and equipment lost when the tsunami crashed ashore late on Monday, killing at least 574.
Parts of brightly painted fishing boats could be seen sticking out from the rubble of red-tile roofed houses.
One general store in Pangandaran's town center had re-opened on Wednesday, and more were expected to follow on Thursday.
The operator of a guesthouse on the outskirts of the tsunami-hit area said she had never closed.
"I stayed open right through," said Agus, 40. "I think tourists will come back."
But aftershocks from Monday's 7.7 magnitude quake kept people across the vast archipelago on edge. Buildings in Jakarta and elsewhere in western Java swayed on Wednesday night from a 6.2 magnitude quake. Earlier in the day people fled Pangandaran beach pell mell in fear of another tsunami.
Another worry was malaria, endemic in the area already, WHO's Setiogi said, adding that anti-malaria supplies were on the way to the area.
She said that overall, however, "local medical operations appeared to have things in hand."
Along the shoreline, bulldozers and excavators cleared debris in the search for bodies. Two newly recovered corpses, blackened and with the stench of death, were taken to a local morgue.
Authorities faced fresh questions about why people were not warned ahead of Monday's killer waves, despite efforts to set up international early alert systems after the 2004 tsunami.
The Jakarta Post said a teletext message had gone to several hundred government officials a few minutes before the waves struck -- too little time for the warnings to be relayed to those who would be affected.
Indonesian Vice President Jusuf Kalla told reporters the government would build an early warning system in Java and other areas in Indonesia in three years.
Indonesia's 17,000 islands sprawl along a belt of intense volcanic and seismic activity, part of what is called the Pacific "Ring of Fire".