Chinese men wear protective masks as they walk in a nearly empty shopping street on February 2, 2020 in Beijing, China.

Kevin Frayer | Getty Images

As authorities in China race to contain the spread of a new coronavirus that has killed hundreds, investors are bracing for global economic fallout that some analysts said could be more severe than the SARS outbreak in 2003.

SARS, which stands for severe acute respiratory syndrome, first emerged in China’s Guangdong province before spreading to other countries. The virus claimed around 800 lives worldwide and shaved 0.5 to 1 percentage points off China’s growth in 2003, according to various estimates.

But the new coronavirus — believed to have originated in Wuhan city — has struck China at a time when its economy has grown larger and established greater connections with the world. That means any pressure on China’s growth now would hit the global economy harder than before.

Here are five charts that show how China’s economy has changed since the SARS epidemic.

World’s second-largest economy

Taimur Baig, chief economist and managing director for group research at Singaporean bank DBS, said “the whole world didn’t even notice” when China’s growth slowed by around 1 percentage point following SARS.

“It was just business as usual,” he told CNBC’s “Capital Connection” last week. “Now, China accounts for nearly a-fifth of global growth. China slowing by half a percent would be seismic.”

Services play a bigger role

Lower consumer spending will pressure China’s services industry, which today account for a larger share of the country’s gross domestic product compared to 2003. That also means any drag from services will weigh more on the Chinese and global economies today.

Tourism spending overseas

Chinese consumers have also been spending big overseas. Since 2014, China has been the largest source country of international tourism expenditure, climbing from seventh place in 2003, according to the World Tourism Organization.

Travel bans and flight cancellations put in place since the emergence of the new coronavirus could curtail Chinese tourism spending overseas. That’s a threat to many economies, especially those in Asia, said Kelvin Tay, regional chief investment officer at UBS Global Wealth Management.

“If you look at Asia itself, Chinese tourism is now a bigger part of the economy for almost all countries,” he told CNBC’s “Street Signs Asia” on Monday.

Major global importer

On the trade front, rising demand within China has made the country the world’s second-largest importer since 2009, data by the World Trade Organization showed.

World’s largest exporter

The virus outbreak could also affect the global economy through China’s exports channel.

China has been the world’s top exporter since 2009, climbing from fourth place in 2003, according to data by the WTO. Countries such as Japan and Vietnam have “a huge amount of reliance on the Chinese supply chain,” said DBS’ Baig, explaining that those economies import materials and parts from China to make their own products to export.

“Not only will China slow and have impact on the global demand, these countries which rely on China for intermediate inputs will also be affected,” he said.

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