(Corrects typographical error in paragraph 1) (Reuters) – AstraZeneca said its antibody-based cocktail to prevent and treat COVID-19 was shown to retain neutralising activity against Omicron coronavirus variants, including the highly contagious BA.2 sub-variant, in an independent lab study. Data from the study by the Washington University showed the therapy reduced the amount of virus detected in samples of all tested Omicron subvariants in mice lungs, the London-listed drugmaker said on Monday. The study has yet to be peer reviewed. The therapy, Evusheld, was tested against the BA.1, BA.1.1, …