22. 12. 2021270 zhlédnutíThis video demonstrates the use of Hemastix test strips for presumptive blood testing. This is a cheep method to test multiple blood samples at a scene. In...
9. 3. 20201 077 zhlédnutíThe second 'presumptive positive' coronavirus case has been announced in Virginia, a male Fairfax resident in their 80's who was recently on an Egyptian crui...
5. 2. 202072 tis. zhlédnutíBritish Columbia has announced a second “presumptive confirmed” case of the novel coronavirus.The case will still need to be confirmed by a second test at th...
6. 3. 20202 096 zhlédnutíThe Washoe County Health District says a Reno man in his 50s tested presumptive positive for Covid-19. The patient is linked to the Grand Princess cruise shi...
2. 3. 2020345 zhlédnutíRhode Island public health officials said they've identified the state's first and second presumptive positive cases of the new coronavirus disease.Subscribe...
27. 1. 202080 tis. zhlédnutíOntario health officials have announced that a second “presumptive” case of the new coronavirus has been reported in the province, marking the second case in...