Tens of thousands of people are still homeless as authorities struggle to identify the dead and locate the missing.
Charities working in the worst- hit areas have stepped up campaigns to prevent malaria, measles, cholera, typhoid, dysentery and other diseases that are spreading throughout refugee camps in the disaster zone.
Tetanus was detected in 67 people in Indonesia's hard-hit Aceh province with the number expected to rise.
The ECHO gala on February 11 has already sold more than £5,000 of tickets in online sales and aims to raise more than £50,000.
Merseyside stars taking part include former Spice Girl Mel C, Gerry Marsden, Claire Sweeney and Alan Bleasdale.
ECHO editor Mark Dickinson said: "We hope that the city will get together to support such a worthy cause.
"The night promises to be a huge success with some top acts and will help rebuild the lives of many tsunami victims."
The night will also hosta grand prize auction to raise money.
Among the prizes will be Beatles memorabilia donated by Paul McCartney's brother Mike.
Liverpool business leaders are also coming forward to donate prizes and will be able to entertain clients by paying to have a box at the concert.
Merseysiders' generosity has been outstanding as fundraising events took place across the city this weekend.
Claire Sweeney described the tragedy as heartbreaking and has urged everyone to come forward to help.
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