tom: jim reid, thank you so much. about the health of north korea's leader kim jong-un, a u.s. official saying they learned he was in critical condition last week after cardiovascular surgery. the trump is managed -- administration is trying to find out more. last week in pyongyang, he missed a holiday celebration. donald trump will temporarily suspend emigration to the u.s., wanting to -- immigration to the u.s., wanting to stop the spread of the coronavirus. no word on how long the suspension will last. todays. senate may vote on the next emergency stimulus package that could be worth up to 500 billion dollars and would add funds to the depleted small business aid program and provide money for overwhelmed hospitals and coronavirus testing. global news 24 hours a day, on air and @quicktake on twitter, powered by more than 2700 journalists and analysts in more than 120 countries. i am viviana hurtado. this is bloomberg. francine: thank you so much. we will look at dollar dynamics and we have a couple of calls on at yo

as jim reid reports. means and how it might be achieved. asjim reid reports.ts agree testing for this virus is critical, part of the way we can save lives and break out of the lockdown. we have a simple message for all countries, test, test, test. there are two main types of test for coronavirus, at the moment we are using something called a pcr test, normally taken with a swab, these look for genetic material related to the virus. you're asking the question, does that person had the virus in their system at the time of the test? to detect the genome of the test? to detect the genome of the virus itself. pcr testing can tell if someone currently has the virus, crucial for both tell if someone currently has the virus, crucialfor both patients tell if someone currently has the virus, crucial for both patients and health care workers. but it needs to be analysed in a laboratory, that it ta kes be analysed in a laboratory, that it takes time and is expensive. it needs skilled staff and chemicals called reagents which are in short supply. that's one reason why many

finding clues as to how it started is crucial to stop a similar crisis happening in the future, as jim reidts. for decades, there have been fears that a global pandemic could be caused by zoonotic transmission. that's a disease thatjumps from animals to humans. the more we interact with these new wildlife species that we haven't historically done so, the more rolls of the dice we are throwing. and the greater the opportunity there is for a pathogen to thenjump into a human. injanuary, researchers published the genetic code of coronavirus. it shows a close match to a disease found in horseshoe bats in western china. they fly and roost in huge numbers, so easily spread disease. but the level of virus in their body is low, which is why some think that this, the pangolin, or another animal, may have caught it and passed it on to other humans. if the virus has gone through an intermediate host, it's quite likely to change in some way, which may enable it to be easier for it to infect a human being. how, then, could that virus spread to wuhan, a huge city of 11 million people? the first suspect w