is britain's european 1500m champion, laura muir. this weekend was meant to be the london marathon. it's such a shame for everybody involved, notjust the athletes but all the people going along to support the charities as well stop the challenge is trying to do something, whether it is 2.6, 26, 260, all something to help raise money for those charities who are benefiting from this weekend. that's all the sport for now. now it's time for a look at the weather with susan powell. for the week ahead, the last few days of april, more in the way of wet weather spreading up in the south. windier from wednesday onwards. however, this evening and overnight,

a dry picture once again, so some showers across scotland. winds, clear skies for east anglia.. mainly a touch of frost here first thing on sunday. a weather front across northern england and north wales, patchy rain come the afternoon, ahead of it a better chance of heavier downpours for south wales, the midlands, parts of yorkshire and lincolnshire, some thunderstorms. to the north, a cooler pressure feel, some sunny spells around and a few showers. cooler air working its way as the week pans out. hello, this is bbc news. and about 50 minutes, the film review. now on bbc news, the latest information and health advice on coronavirus, including what the symptoms are and how to self—isolate. presented by annita mcveigh.

hello, and welcome to the special programme. i'm annita mcveigh. since the start of this outbreak, scientists have been trying to answer the question, where did this virus come from? as the lockdown in the chinese city of wuhan has eased, forensic researchers and other investigators can restart their investigations into the origins of the virus. scientists say finding clues as to how it started is crucial to stop a similar crisis happening in the future, as jim reed reports. 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're throwing. the greater the opportunity there is for a pathogen to then jump intoa 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 this, the pangolin, or another animal, may have caught it and passed it on to humans. if the virus has gone through an intermediary host, it's quite likely to change in some way, which may enable it to be easierfor it to infect a human being. how, then, would that virus spread to wuhan, a huge city of 11 million people? the first suspect was this place,

a live animal market. of the first 41 hospital patients in wuhan, 28 had a connection to this place. we think the evidence is pretty compelling that an animal that was being sold in that market was infected with this virus at fairly large amounts, and unfortunately, some of that virus spread into humans quite rapidly, quite efficiently. but it's not clear—cut. even though there is evidence of the disease, 13 of those first 41 patients had no link to the place. one link is that covid—19 is the result not of a single virus, but of two combining. it may well be that the ancestor of the current coronavirus was in fact two different viruses that recombined in an animal host. it's an incredibly efficient way of gaining new characteristics, new biological behaviours. the genetic make—up of the virus makes it very unlikely it was engineered deliberately by man.

but there have still been persistent rumours it could've escaped from a laboratory accidentally. does that correspond with what you have heard from officials? well, i don't want to say that, john, but i will tell you more and more we're hearing the story. at the centre of the claims is this institution, a 30—minute drive from the market. it was studying infectious diseases. the scientist in charge has said any accidental leak is impossible, and the us military has said it's more likely the virus was spread naturally. all these rumours, then, about how the virus started, how much of that is going to concern the chinese authorities? i think it is important for beijing to manage it very carefully. china has to protect its image, and the coronavirus now given its development clearly

concerns china's honour and dignity. in china itself, that question of where this virus came from is a sensitive one. this month, scientists there were told any studies about its origin must first be cleared by the government. controlling information about how the virus started and why the chinese government wasn't in a position to do something quicker becomes very important. and for a one—party system, this means everything. but this is about more than just politics. it's about our future. scientists agree that we must better understand the origins of this virus to better protect ourselves from the next global pandemic. as the search for the origin of the virus continues at pace, so does another for a possible vaccine. here's the bbc‘s laura foster. every day, we are getting closer to having a vaccine that can stop coronavirus. but it has to be safe, and it has to work. that doesn't happen overnight. what exactly is a vaccine? so, they're like a training course

for our body's immune systems. they harmlessly show viruses or bacteria to our bodies. our immune systems recognise them as an invader and learn how to fight them. it means next time, when we encounter the disease for real, our bodies already know how to fight it. what research is being done? the world health organisation says more than 70 different teams are currently working on a vaccine. it's quickly become the most important piece of scientific research in the world, with some universities pausing other projects to work on it full—time, with trials being done with a number of animals, as well as in humans. when will it be ready? scientists at the university of oxford have said it could be as early september 2020. but that is if everything goes according to plan at every single stage. if something goes wrong, that can push everything back. most think it'll be more like a year, 18 months from now — so the second half of 2021. why so long?

well, making and manufacturing a virus takes a lot of time. there's a lot we don't understand about this coronavirus. but we know its genetic code. this code is like a blueprint. some scientists are lifting parts of it and combining it with existing viruses to create something that looks like the coronavirus. the idea is this can then be given to animals or humans. others are injecting the raw code straight into test subjects. when researchers think they've found something that works, it has to be tested again and again and again, and go through so many clinical trials to make sure it's effective and that there are no unintended side effects. even after that, you have to make this vaccine on a massive scale and deliver and distribute it to people all over the world.

as muslims celebrate the holy month of ramadan, some muslims are expressing concern that the official advice about social distancing isn't reaching many in the community. our religion editor, martin bashir, has been speaking to one gp in greater manchester in england to hear her views about fasting, faith and whether public health messages are getting through. with afternoon surgery over, dr siema iqbal is on the school run. she and her husband are key workers, and at the start of ramadan, she says she's concerned about whether the government's message on the coronavirus is getting through. i don't understand how it would get through to the muslim community. a lot of the messaging coming out from the government is in english. it's on radio stations and tv channels that they may not necessarily be listening to or watching. even the letters that we send out advising patients to shield themselves for 12 weeks are all in english. these are real, specific challenges that this community in particular is facing. 46% of the muslim community lives in the 10% of the most deprived parts of the uk. that surely plays a part. we also have increasing rates

of poverty, ill—health and we have a lot of the community doing more of the precarious roles. so, they may be working as cleaners, bus drivers, front line workers. a promotional video prepares british muslims for ramadan during the pandemic. no prayers at the mosque. and without communal meals, iftars, like this one held in london last year, that break the daily fast. how significant is the gathering of muslims together at that time? we found that actually people's perception of muslims in this country has improved through simply coming together to have a meal. for us, seeing the many thousands of stories we've heard from people who've come to our events have left feeling more optimistic, feeling a sense of belonging,

it's incredibly difficult to accept the fact that we will not be able to reach out to those in the same way. but the challenges of ramadan this year may yet present an opportunity. i'm always apprehensive about fasting and will i be able to get through the day? how angry will i get when i'm hungry? how much am i going to shout at the children? i think the pandemic has actually brought me closer to religion and made me more spiritual. i can't imagine how awful it must be to do iftar on your own, but i think it will bring us back to the true essence of fasting.

teenagers have been using art during the coronavirus lockdown. this is my drawing. where i represented my desk. the heart of my quarantine days. and the desk, there is a laptop that represents my mornings. where i follow my virtual lessons. behind this, a window or i represent a place where i want to be. there is also a rainbow because it is a symbol of hope and a clock and a calendar are symbols of time and this time that i have to spend here

at home. when i saw the news of the virus coming around zombies came into my mind. the early days spent at home due to coronavirus but it is not that hard. but still it is sad that i could not see my friends so i hope the situation ends soon. i have illustrated all my thoughts in this picture. the importance of sanitation here, help as well is a factor that is proven that nobody is going out and nobody is walking now. on my own at my local surroundings i

can see that there are a lot of birds flying around. this is not normal. so i think we are giving space for nature to regrow. we all are ina space for nature to regrow. we all are in a very different situation. in spite of all that is happening around us, doctors who are listening, the health workers, sanitation helpers, they all are putting their lives at stake for us. we must thank them for going out there and risking their lives. let's hope this gets over soon and that we go out in the open and then stay home and stay safe. and that's it for now. a reminder, you can always keep up—to—date on the bbc news website, or you can follow me on twitter — i'm @annita—mcveigh. thanks for watching.

hello, and welcome to the film review with me, mark kermode, rounding up the best new movies available for viewing in the home. now, with lockdown currently testing everyone's patience, it seems to me that we could all do with a little bittersweet sentimentality in our lives. perhaps with an added feel—good lift. well, that's exactly what's on offer from astronaut, a film with a small budget, a big heart and a stellar hollywood star.