PTL fell today on the back of encouraging reports from drug...

PTL fell today on the back of encouraging reports from drug company Pfizer that its vaccine was going well.

However it still needs much wider clinical testing plus regulatory approval, then if all Ok and approved, mass manufacture.

Whatever happens, the switch to enhanced cleaning may be permanent in industry, commerce and households. It's also meant much greater visibility of PTL products to these sectors.

'The Australian' online highlights another roadblock (a solution requiring a special suitcase that isn't opened more than twice a day for one minute each has been developed) but:

The Pfizer vaccine will need to be stored at ultra-cold temperatures and experts have warned that its introduction could be slowed by the need for specialised equipment.

The vaccine, which is made of a type of genetic material known as mRNA, has produced highly encouraging results in final trials. However, it must be stored at minus 70C until the day it is used, a temperature far out of the reach of standard refrigerators. The requirements may make holding vaccinations in GP clinics, care homes and other locations difficult, experts said.