President Joe Biden offered his thoughts and prayers on behalf of Americans following the deadly earthquake in Turkey and Syria during an event in Wisconsin Wednesday afternoon.

"It's one of the worst earthquakes in that region in over 100 years and we mourn the loss of so many lives and we offer our deepest condolences," he said.

Biden also commented on the "amazing" rescue efforts underway.

"You see dads or moms pulling little babies out from underneath this rubble," he said. "So many people dying. And our thoughts are also with the survivors who've been torn apart by this tragedy."

-ABC News' Justin Gomez

Istanbul's stock exchange operator suspended trading for five days in an unprecedented step and announced that all trades that took place on Wednesday would be canceled in the wake of the earthquake.

"Due to the increase in volatility and extraordinary price movements after the earthquake disaster; in order to ensure the reliable, transparent, efficient, stable, fair and competitive functioning of the markets, Equity Market and Equity & Index Derivatives in the Derivatives Market have been closed," Borsa Istanbul, the stock exchange operator, said in a statement on Wednesday.

-ABC News' Will Gretsky

Since a 7.8 magnitude earthquake struck southeastern Turkey before dawn on Monday, there have been a total of at least 648 aftershocks in the region.

-ABC News’ Engin Bas

Video has emerged showing the moment a newborn baby was rescued from the earthquake wreckage in northwestern Syria on Tuesday.

The infant, whose mother appeared to have given birth to her while buried beneath rubble, was reportedly found alive in the ruins of her home in the town of Jindires, about 35 miles northwest of Aleppo. The baby’s umbilical cord was still connected to her mother, who was found dead, according to The Associated Press.

The footage shows a rescuer carrying the infant after she was pulled from the piles of debris. The baby was subsequently transported to a hospital. She is the only known member of her immediate family to survive the disaster, AP reported.

The United States is “ramping up” assistance to Turkey and Syria, White House spokesperson John Kirby said Friday.

“In Turkey, a USAID Disaster Assistance and Response Team is already on the ground. And two of our most highly trained urban search and rescue teams are conducting operations in support of Turkish rescue efforts in Adana -- one of the hardest-hit areas inside the country,” Kirby said. “These teams have nearly 200 personnel combined between them, specialized equipment and canine support dogs, as well.”

Kirby said they’ve been able to “expand their operational reach with the support of U.S. military Blackhawk helicopters” to try and get around the extensive damage to roads and bridges.

“To date, they have been able to cover more than 630 sites across Adana [in Turkey],” Kirby said. “In Syria, our humanitarian partners continue to urgently scale up response efforts to reach people in need. That work will include, or has included, chartered flights that are transporting essential medical supplies and teams distributing hot meals and other food.”

The United Nations and its partners have successfully completed two humanitarian convoys into northwest Syria, Kirby said. One partner delivered 14 additional truckloads of supplies through the Bab-al-Hawa Crossing on the Turkey-Syria border, “totaling now 20 trucks of critical medicines, food and water to people in need over the last two days,” he said.

Kirby said U.S. sanctions imposed on Syria “will not prevent or inhibit prohibiting humanitarian assistance.”

-ABC News’ Justin Gomez