NEW YORK (Reuters) - World stock markets jumped on Monday, encouraged by slowdowns in coronavirus-related deaths and new cases in some global hot spots, while oil prices tumbled again due to a delay in talks between Saudi Arabia and Russia to cut supply.

The U.S. dollar was little changed against a basket of peers and sterling turned negative versus the greenback and euro after news that UK Prime Minister Boris Johnson was moved to intensive care as he grew sicker with COVID-19.

Equity investors were encouraged as the death toll from the virus slowed across major European nations, including France and Italy.

In New York State, Governor Andrew Cuomo said that despite an increase in the number of cases and deaths, a daily decline in new hospitalizations and other data suggested a possible plateau in the crisis.

“It is definitely not going to be a one-way street but this potentially could be a turning point; we are starting to get some good news and hopefully that trend will continue,” said Peter Jankovskis, co-chief investment officer at OakBrook Investments LLC in Lisle, Illinois.

“But that is not to say it is going to be a smooth path. We all know from the recovery we experienced after the 2008 financial crisis there is always a potential for a negative development to cause the market to pull back again.”

U.S. officials have braced the country for a “peak death week” from the pandemic, with the death toll topping 10,000.

The global economy will continue to feel the effects of the measures taken to slow the spread of the virus. Investor morale in the euro zone fell to an all-time low in April and the currency bloc’s economy is in deep recession due to the coronavirus, which is “holding the world economy in a stranglehold,” a Sentix survey showed.

“Never before has the assessment of the current situation collapsed so sharply in all regions of the world within one month,” Sentix Managing Director Patrick Hussy said.

The Dow Jones Industrial Average rose 1,627.46 points, or 7.73%, to 22,679.99, the S&P 500 gained 175.03 points, or 7.03%, to 2,663.68 and the Nasdaq Composite added 540.16 points, or 7.33%, to 7,913.24.

The pan-European STOXX 600 index closed up 3.73% and MSCI’s gauge of stocks across the globe gained 5.49%.

FILE PHOTO: The New York Stock Exchange (NYSE) building is seen in New York City, New York, U.S., June 4, 2019. REUTERS/Mike Segar

Emerging market stocks rose 2.66%. Japan’s Nikkei futures rose 6.77%. Markets in mainland China were closed for a public holiday.

Despite the day’s strong equities gains, caution was not cast aside.

“This still looks like a case of over-optimism,” said Marios Hadjikyriacos, investment analyst at online broker XM.

“A lot of uncertainty is still in the air and there is no clear timeline for when any of these economies will be reopened, which is the most important variable for markets.”

(GRAPHIC: Coronavirus vs world stocks - )

OIL RESUMES DECLINE

U.S. crude dropped sharply following two sessions of double-digit gains after Saudi Arabia and Russia, at odds over production, postponed a meeting of the Organization of the Petroleum Exporting Countries and its allies, or OPEC+, until Thursday instead of Monday.

“Perhaps it is best that the meeting was delayed for producers to cement a minimum of common ground before the actual discussions take place on Thursday,” BNP Paribas analyst Harry Tchilinguirian said.

The market was further weighed down by a report from data provider Genscape that inventories at the Cushing storage hub in Oklahoma, the delivery point for WTI, rose by about 5.8 million barrels last week, traders said.

U.S. crude recently fell 7.3% to $26.27 per barrel and Brent was at $33.13, down 2.87% on the day.

JAPAN IN STATE OF EMERGENCY

In currency markets, the yen weakened 0.60% versus the greenback at 109.16 per dollar and also slipped against other major currencies as Japanese Prime Minister Shinzo Abe said the government would declare a state of emergency as early as Tuesday to curb a spike in coronavirus infections.

The dollar gained ground against the euro while the pound slipped after news of Johnson’s move to the ICU. British Foreign Secretary Dominic Raab is designated to take over leadership of the country if Johnson is unable to fulfill his role.

“Clearly the pound has weakened and that reflects the uncertainty and clarity over how much authority Raab will have,” said Chris Scicluna, head of economic research at Daiwa in London. “From an economic point of view there’s unlikely to be much change. But if and when there are difficult decisions to be made, the lack of guidance at the top could be concerning.”

The euro was down 0.12% to $1.0795 and Sterling was last trading at $1.2239, down 0.17% on the day.

The dollar index fell 0.03%.

Yields on safe-haven U.S. government bonds crept higher in fixed income markets, reflecting the slightly brighter tone in world stock markets.

Lou Brien, a strategist at DRW Trading in Chicago, said Wall Street’s upward trajectory was “the first and last reason why Treasuries are lower in price and higher in yield this morning.”

Benchmark 10-year notes last fell 25/32 in price to yield 0.6666%, from 0.589% late on Friday. The 30-year bond last fell 1-14/32 in price to yield 1.2676%, from 1.216%.

Despite the stocks rally, gold prices touched a more than three-week high. Spot gold added 2.8% to $1,660.84 an ounce.