AMNA NAWAZ: Hopes faded further today that more people will be found alive in Venezuela six days after earthquakes slammed the country.

The government's official death toll is 1,900, though that is believed to be a vast undercount.

By one estimate, 50,000 people remain missing and 60,000 buildings may have collapsed across the northern coast.

Stephanie Sy reports.

STEPHANIE SY: Rescuers are still listening for signs of life.

But six days in, the silence is deafening.

Yet, today, this Jordanian team heard something.

Eyes fixed on the monitor, they snaked a camera through the layers of collapsed concrete.

They spot him, a tiny arm, a toddler, motionless beneath the rubble.

(CHEERING) STEPHANIE SY: Emaciated and weak, but alive, wrapped in a blanket, the team rushes him to a waiting ambulance.

These rescues are becoming rarer as time passes.

Thousands of Venezuelans still have loved ones trapped beneath collapsed structures, the frustrations of these residents evident as they try to block a rescue truck from leaving the disaster zone, demanding crews keep searching.

WILKER MOLAYA, Father of Missing Daughter (through translator): They will not move.

I have nothing to lose.

I have nothing to lose.

They can kill me if they want.

STEPHANIE SY: They're angry by what they see as a government that is failing them.

WILKER MOLAYA (through translator): They don't help us and they won't let us in.

They don't give us any equipment and we have families trapped there.

STEPHANIE SY: Yulis Salcedo waits outside a hospital in Caracas.

Just days ago, she was preparing to welcome her 21-year-old son home after he was deported from the United States.

YULIS SALCEDO, Mother of Anderson Salcedo (through translator): The flight arrived at 11:00 a.m.

Then they went through all the migratory process.

He called me at 5:00 p.m.

and told me: "I love you so much, Mom.

See you tomorrow at home."

Like any mother, I prepared a welcome for him with his blue, yellow, and red balloons.

STEPHANIE SY: Anderson Salcedo spent his first night back in Venezuela at this hotel in La Guaira, shown in a satellite image.

Hours later, the earthquake struck.

This is what's left of the complex.

He survived, but remains in intensive care.

He was among some 140 deportees, including children.

This video showed their arrival back in Venezuela hours before the earthquake struck.

Most are still missing.

YULIS SALCEDO (through translator): I want justice.

I want justice because it's not fair that my son is lying in that bed with respiratory support with his legs amputated at the age of 21.

I'm asking for justice because this government can do to us Venezuelans whatever they want.

STEPHANIE SY: At the Port of La Guaira, hundreds of coffins now line the docks.

The port has become a temporary morgue after local hospitals ran out of space.

Across Caracas, families have pitched tents on sidewalks and city streets.

After days of aftershocks, they're too afraid to go back.

CARMEN BALLEJOS, Displaced Caracas, Venezuela, Resident (through translator): Where are we going to sleep if it's shaking all the time?

It's like we're dancing.

And if we stay in our homes because we want to be at home, then we're going to suffer just like the victims are suffering.

And we don't want that.

But the state, the country is in shambles.

STEPHANIE HOCHSTETTER, World Food Program: The common denominator is great suffering and great distress.

STEPHANIE SY: Stephanie Hochstetter of the World Food Program spoke to the "News Hour" from La Guaira and described some of the suffering she's witnessed.

STEPHANIE HOCHSTETTER: ... that struck me the most was a father walking along the sidewalks of destroyed buildings in Catia La Mar holding his 2-year-old, his 4-year-old, and his 5-year-old, asking for help to return to Caracas because he had lost his building.

He had no water, he had no food.

His wife had been taken to Caracas to be hospitalized because she had -- her leg had been amputated and he didn't know where to take her -- his children.

STEPHANIE SY: The WFP is giving weary, quake survivors a single stop for their basic needs.

STEPHANIE HOCHSTETTER: To facilitate this access to the people and not have them have to go to one place for a doctor or a medical emergency, another place to find a bathroom, another place -- they need showers.

They need to wash their hands.

They need water to drink.

So the intention of putting everything together is that, to make this suffering a little lighter.

STEPHANIE SY: For the "PBS News Hour," I'm Stephanie Sy.