Public Health

Perhaps it would be helpful if the Government were to say what level of reduced efficacy they would consider to be a cause for concern. Any flu vaccine that I ever purchased when I was doing the Minister’s job had about 60% efficacy. The three vaccines being used at the moment are way ahead of that, so even a reduction in efficacy of 10% would still significantly outpace the flu vaccine we currently roll out. Would it be helpful if the Government said at which level it would drop to where the indicators would flash red?