UNITED NATIONS (AP) — The U.N. chief is heading to Washington for meetings at the World Bank and then to Tunisia to support its political transition and Cairo to attend a donors conference to rebuild Gaza.

U.N. spokesman Stephane Dujarric said Tuesday that Secretary-General Ban Ki-moon will attend meetings at the World Bank on Wednesday on combatting Ebola, improving sanitation in Haiti and supporting stepped up financing to promote economic development in poorer countries.

Dujarric said Ban will then head to Tunisia, whose uprising in January 2011 launched the Arab Spring, to express the support of the international community and the United Nations for the country's transition process.

Later this week, Ban will fly to Cairo to attend Sunday's donor's conference for the reconstruction of Gaza following the 50-day war between Hamas and Israel.