(CNN) A second wave of US aid arrived Saturday at the Colombian-Venezuelan border in the midst of Venezuela's humanitarian crisis.

The US Air Force C-17 cargo planes left Homestead Air Reserve Base in Miami and landed in Cucuta, Colombia, according to a statement from the US Agency for International Development (USAID). The relief supplies delivered included hygiene kits that can help about 25,000 people and nutrition products that USAID says can feed about 3,500 children.

The first wave of aid arrived February 8 and included locally purchased food kits, hygiene kits, medical supplies, ready-to-use supplementary foods and high-energy biscuits, USAID said.

Venezuela's self-declared interim president, Juan Guaido, urged the hundreds of thousands of registered volunteers Saturday to help get aid into the country.

Speaking at a rally of volunteers in Caracas, Guaido said the "end of poverty will come, the humanitarian emergency will cease," urging that the aid be let in and "humanitarian corridors open."

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