(NEW YORK) — The novel coronavirus pandemic has now killed more than 569,000 people worldwide.

Over 12.9 million people across the globe have been diagnosed with COVID-19, the disease caused by the new respiratory virus, according to data compiled by the Center for Systems Science and Engineering at Johns Hopkins University. The actual numbers are believed to be much higher due to testing shortages, many unreported cases and suspicions that some governments are hiding or downplaying the scope of their nations’ outbreaks.

The United States has become the worst-affected country, with more than 3.3 million diagnosed cases and at least 135,205 deaths.

Here is how the news is developing today. All times Eastern.

10:25 a.m.: Mayor worried about New Yorkers in their 20s

For the first time since March, no new coronavirus deaths were reported in New York City on Saturday, which Mayor Bill de Blasio on Monday called “so striking and so moving.”

But he added at Monday’s news conference, it’s “very hard to take a victory lap because we know we have so much more ahead.”

“Even though we have overall seen a huge reduction in the presence of the coronavirus in this city, we do see one trend that is worrisome: for young adults we see the infection rate rising,” de Blasio said, especially those ages 20 to 29.

De Blasio announced new guidance that New Yorkers should wear a face covering as much as possible when around other people in an indoor setting that is not their home.

Of those getting tested in New York City, 2% are testing positive, de Blasio said.

8:30 a.m.: Why Miami mayor warns the ‘death rate will most likely go up’

As Miami, Florida, has become especially hard-hit by the coronavirus, the hospitals are becoming strained, Miami Mayor Francis Suarez told ABC News’ “Good Morning America” on Monday.

“We have a very small capacity in our ICUs. We have the ability to grow that capacity, but it’s something that’s extremely worrisome,” Suarez said. “We just crossed the threshold for the highest number of [people on] ventilators that we’ve had in the history of this virus.”

Many coronavirus patients placed on ventilators never recover.

Suarez said over 200 ventilators were in use as of Sunday in Miami.

“That means that there’s no doubt that the death rate will most likely go up over the next week or two,” he said. “That’s something that our residents should be expecting and something that is unfortunately most likely going to be a reality.”

The Florida Department of Health reported 15,300 new cases of COVID-19 on Sunday, making it the highest one-day total for a state in the U.S. since the pandemic began.

5:18 a.m.: Russia confirms 6,537 new coronavirus infections

Russia has confirmed 6,537 new coronavirus infections on Monday which brings the country’s official number of cases to 733,699.

Russia also reported that over the past 24 hours 104 people have died bringing the total death toll to 11,439.

Additionally, a total of 2,960 people recovered over the last 24 hours which brought the total number of recoveries to 504,021.

3:29 a.m.: Mexico now has more COVID-19 deaths than Italy

Mexico has now surpassed Italy in number of deaths from the novel coronavirus with a total of 35,006 deaths confirmed in the country so far.

The United States remains by far the worst affected country in the world with 135,176 deaths followed by Brazil with 72,100 confirmed COVID-19 deaths and the United Kingdom which has had 44,904 deaths so far.

Mexico now sits fourth when it comes to number of deaths and sits just ahead of fifth-highest Italy which has had 34,954 die due to complications of the virus.

Copyright © 2020, ABC Audio. All rights reserved.