@RPeberdy tweets: How much does it cost to bring a new drug through development, 2testing & to market? Respectfully @longitude_prize?
Dame Sally Davies answers: The cost of bringing an individual antimicrobial drug to market is thought to be in the region of £750m to £1.2bn.
@IainFrater tweets: What can be done about poor use of antibiotics outside the UK to combat #antibioticresistance? #bacteriaacrossborders
Dame Sally Davies answers: We can use our influence to work with other countries and organisations like the World Health Organization and the European Commission to make sure that all countries have a common understanding of this issue and are doing their bit. We are working with other countries in the Commonwealth to help them improve the systems they have to monitor resistance and respond to outbreaks of infections.
Daniel, Southampton, emails: How long do you think this review will take, and then how long before we see action taken?
Dame Sally Davies answers: We expect it will take up to two years. The review will present its initial findings in 2015, with the final report and recommendations due in 2016. If there is international consensus on the recommendations, there is no reason why the recommendations shouldn't be actioned as quickly as possible.