Or saliva sample. That could be critical in parts of the world that might not have advanced testing facilities. We might expect some companies would be able to deliver a rapid test, that would be a game changer, especially if after ten minutes we could identify a large proportion of those who have been infected. The next step is to prove these tests can work effectively and quickly. Its not one but a combination of all these technologies that can, perhaps, help us keep the virus in check until a vaccine is developed. One of the latest countries to advise people to wear masks or cover their faces in public is the united states. Despite the guidance from experts at the World Health Organization, that medical masks should be reserved for Health Care Professionals and not used by the general public. Israel, indonesia, and morocco are now amongst countries that have made wearing of face masks compulsory in public. The bbcs science editor has been investigating how effective wearing them can be. A computer simulation of someone coughing in a supermarket. This is new research, still to be confirmed, that shows how coronavirus could spread and linger in the air, infecting people nearby. The scientist involved says the obvious conclusion is to avoid places that might be busy. First of all, dont go there if you dont need to go there. If you need to go there, go there only as seldom as possible. And stay there as short a time as possible. If someone is showing symptoms they shouldnt be going to a supermarket or anywhere else but there is growing evidence that people can have the virus and not show symptoms. And thats one reason why the Us Government and many others, are now urging people that if they have to go out, they wear a mask. In morocco, for example, there is now a Government Order to wear masks. With the threat of prison or fines to back that up. But the World Health Organization and the British Government believe measures like this just arent needed. Here in the uk, the guidance is its Health Care Workers and carers who should wear masks. And the worry is that supplies might run out if the public are trying to buy them as well. There are different views about this among scientists. One is that if you wear a mask, you might reduce the risk of passing virus to others. Another is that once you put a mask on, you might get a false sense of security. You might think you can get close to people again or stop washing your hands so often. And you might treat the mask much too casually. Wearing a mask must be consistent, its not on to wear a mask and decide to take it off and smoke a cigarette or eat a meal, it must be worn full time. At the same time, when the mask is taken off, the outside surface may be contaminated as well. And hands become contaminated and then could serve as a source of infection. In any event, more and more countries are demanding that people wear masks. In indonesia, they are handing them out. And the Italian Region of tuscany is scaling up deliveries because everyone will have to wear one. Attitudes are changing fast. Were headed to cape town now, an unprecedented truce has broken out between rival gangs in the townships around the city. South africa is trying to control the spread of coronavirus. Gang leaders have halted their turf wars and turned the Delivery Networks usually used for drugs trafficking, to get foods into poor households instead. Andrew harding, the bbcs africa correspondent, reports. These are some of the most dangerous streets in south africa and the world for communities, fought over relentlessly by rival drugs gangs. And the world poor communities fight. But today a virus and nationwide lockdown, many have achieved what the police and the army failed to do. This is the american gangs turf. Most of these men have been injail, some are killers. But today, instead of selling drugs and robbing people, they are bagging up Food Supplies for hungry families. I got a phone call from different gang leaders saying weve never asked you for anything but i thought, hey, if these guys are starving, they are at the top of the food chain, the rest of the community will be in serious strife. To help, the gangs are drawing on their own particular skill set. The best distributors in the country, they know how to distribute things, they are used to distributing other white powders but they are distributing things and they know everybody. What does the Community Think of the criminals sudden change of focus . There is relief here for sure, that a gang cease fire has taken hold during lockdown. We rely on one another to help each other, even if its gangs, people, not gangsters. There is no such thing as gangsterism, in these times all of us stand together. But it is hard to tell what people here really think about the men who have terrorised their neighbourhoods for decades. The authorities are sceptical. I dont think it exonerates you when youve done so much evil, one good deed doesnt wipe it all away, maybe they can commit to slightly more long term good, put away arms permanently and stop intimidating and robbing residents. Then we are good. Because of the lockdown, im not able to film. I am in johannesburg, not cape town but leaders agreed to talk over the phone. Do you think south africa, your community will be changed by this experience . Yes, maybe as well. And thats whats happening now . Yes. Do you think that will last . Maybe, maybe not. Once the virus is over, the fighting will start again . Maybe the fighting will start again, but we trust in god. God will make a way. So, a temporary cease fire, temporary lockdown and just a sliver of a chance that the virus will bring lasting change to some of the most dangerous streets in the world. Andrew harding, bbc news, south africa. Finally, throughout our series, weve been hearing from chris morris and the Reality Check Team who have been myth busting some of the big stories, treatments and cures you may have heard about covid i9. Fake stories. We are all going to be in this for the long haul and separating fact from fiction is really important. So here are some myths you should be aware of. Number one. Lemonjuice protects you from covid i9. There have been plenty of claims about things you should eat or drink to thwart coronavirus. And the lemonjuice myth just wont go away. It started with a viral social media post containing advice from a fake chinese scientist. To be clear, lemonjuice is obviously not bad view, in fact, all fruit and vegetables are essential while nearly all of us have to stay at home. Not bad for you. They can help keep you healthy. But they dont stop you getting a virus like this. Myth number two. Mosquito bites can infect you with the virus. We know you can get diseases from mosquito bites but there is no evidence at all that the little brutes can infect you with coronavirus. Again, remember, this is a respiratory virus, spread mainly when someone who is ill coughs or sneezes. And the best way to protect yourself is to avoid close contact with anyone who is sick. And keep washing your hands myth number three. Blood donations will get you a free test. Some people are hoping they might get a free coronavirus test if they donate blood. Thats absolutely not the case. But theres been a persistent false belief on social media that it might be. To be clear, you dont get tested for covid i9 if you give blood. The last thing staff who run blood banks want is sick people coming in. Nor, of course, can you get the virus from a blood donation. So, the best advice for now, try to stay healthy, while scientists work towards medical breakthroughs. Thats it for now. Before we go, here are some of the latest striking images from the last few days as the coronavirus continues to affect so many of us. A reminder, you can keep up to date with all the latest information on the lockdown in your area and your country on the website, and you can contact me on twitter at any time. Thank you for watching. Our weather is looking cooler by the time he gets to monday. Between now and then the chance for a splash of rain on some of our gardens but not looking particularly wet anywhere even though there are a few weather fronts showing up close by on the chartierfor fronts showing up close by on the chartier for some fronts showing up close by on the chartierfor some all fronts showing up close by on the chartier for some all that is being exchanged from one area building later to the weekend. Around that we see the wind coming down from the north pushing colder air our way. Temperatures will be 10 degrees or more cooler across many areas by the time we get to monday. That enhanced bya time we get to monday. That enhanced by a strong wind as well. It is High Pressure so it will be largely dry into the start of next week as we will see in a moment. The patchy rainfor we will see in a moment. The patchy rain for some of us is a saturday starts. Nothing more will push into parts of northern england. Rain to the Western Isles of scotland, chance in the evening for isolated showers and thunderstorms across england and wales where for some of us england and wales where for some of us it will be even warmer than it was on good friday. Then from saturday into sunday, this area of low pressure pushing down the western side of the uk. Another front of low pressure pushing towards scandinavia. Nothing looking particularly wet but a chance of seeing rain initially through parts of scotla nd seeing rain initially through parts of scotland and Northern Ireland and then a few showers developing once more into parts of ingot and wales. The arrows were tilting down from the north and that is colder air starting to arrive from the north. Temperatures for some in the high teens and low 20s but some of us in north and scotland arent getting into double figures. The next are of High Pressure. As you have that special friend by monday, High Pressure. As you have that specialfriend by monday, this means it is turning dry again. There will be fair weather on monday, cloud pushing into eastern parts, arrows coming down from the north and coming down from the north and coming down from the north and coming down this north sea coast along southern areas where the strongest winds will be for some 4050 strongest winds will be for some 40 50 miles power in some places. 78 40 50 miles power in some places. 7 8 degrees on this north seacoast. Temperatures, ii or 12 degrees. High pressure sitting across as we go from monday into tuesday. Underneath with clear skies on monday night, expect a wide spread phosphorescent if you are doing work in the garden, to be aware of that as tuesday begins. But then on to say, remember that area of High Pressure sitting right across us High Pressure sitting right across us meaning it is dry, quite a lot of sunshine out there, and temperatures may be a degree or so higher by the time we get to tuesday. I area of High Pressure still sitting right there from tuesday into wednesday what will have happened at this stage, the winds will have turned whiter where it has been so strong down toward the south, overnight into wednesday mode earning may be a touch of frost again. A chance of seeing misinformed patches to start the day and to find a following behind. It will take an amount of time to shift this era. Notice these areas are creeping up and temperatures recover into next weekend and that will also bring the reduction of our overnight frost threat. This will push area looks as it goes deeper on through next week starting to throw showers and wet weather towards us. A lot of uncertainty about how that will play out. But for much of next week, it is looking dry and we are looking at the possibility of a change in the way. Cooper at first with that risk of overnight frost. It doesnt warm up of overnight frost. It doesnt warm upa bit of overnight frost. It doesnt warm up a bit as the week goes on. If you are wanting rain on the garden, if you dont get it to the rest of this we can, you may have to wait for a while. Bye bye. A shocking no running, please. Runners and cyclists banned from using a stretch of the thames as the easter weekend brings hot weather for many. And we all share a responsibility to tackle this virus, first and foremost by staying at home. The Prime Minister is said to be recovering and has been able to do short walks in hospital. In new york, a mass grave as the city tries to deal with the rapidly growing number of dead. Queuing forfood in calais we report on the migrants in camp there searching for supplies. Ave maria