The new Lockdown Craze sweeping the globe. Welcome to our viewers on pbs in america and around the globe. Major trials of a new vaccine have shown its effective against some new variants of covid 19, helping to reduce fears that they might prove resistant. Novavax is an american jab but its being produced in the uk. Its also easier to roll out than some previous vaccines since it doesnt need to be kept at ultra low temperatures. The news came amid a deepening row between another vaccine maker, astrazeneca, and the European Union over shortages. Our medical editor fergus walsh reports. Once again, science has triumphed in the fight against coronavirus. The Us Firm Novavax has released results of its british trial showing the first proven efficacy against the new, more contagious uk variant. There were more than 15,000 volunteers on the trail throughout the uk. Over half the cases of covid recorded were the result of the new variant. The results showed the vaccine was 95 effective agains