Impersonal it and there

1.) there is much more data and evidence on how COVID-19 is spread, => introductory there

2.) It is clear that urgent research is needed on the best material suitable for universal masks => impersonal it identification

3.) It’s still important to help prevent transmission by practicing social distancing by staying at least 6 feet away from others in public => impersonal it distance 

https://www.thejakartapost.com/life/2020/04/06/why-wear-face-masks-in-public-heres-what-the-research-shows.html ( 7/4/2020)