Superbugs could kill millions more and cost $2tn a year by 2050, study shows

MRSA bacteria under an electron microscope. The US, UK and EU economies are on course to be among those hardest hit by antimicrobial resistance. File picture: Dr Kari Lounatmaa

Superbugs could cause millions more people to die worldwide and cost the global economy just under $2tn a year by 2050, modelling shows.

A British government-funded study shows that without concerted action, increased rates of antimicrobial resistance (AMR) could lead to global annual GDP losses of $1.7tn over the next quarter of a century.

The research, by the Center for Global Development thinktank, found the US, British and EU economies would be among the hardest hit, prompting accusations that recent swingeing aid cuts are self-defeating.

The Trump administration has confirmed $9bn in cuts to its foreign aid budget, while a number of European countries have also reduced spending on overseas aid.

Anthony McDonnell, the lead author of the research and a policy fellow at the Center for Global Development, said: “When we conducted our research on the economic impacts of antimicrobial resistance, it was anticipated that resistance rates would continue to follow historical trends.

“However, the sudden cuts to Official Development Assistance by the US, which has cut its aid spend by roughly 80%; the UK, which has announced aid cuts from 0.5% to 0.3% of gross national income; and substantial reductions by France, Germany, and others, could drive up resistance rates in line with the most pessimistic scenario in our research.

“Even countries that have been successful in keeping AMR rates under control cannot afford to be complacent. Unless AMR programmes are protected from aid cuts, resistance rates across the world will likely increase at a rate in line with the worst-affected countries.

This would result in millions more people dying worldwide, including across G7 nations. Investing in treatment for bacterial infections now will save lives and deliver billions in long-term economic returns. 

The research calculated the economic and health burden of antibiotic resistance for 122 countries and forecast that in this most pessimistic scenario, by 2050, GDP losses in China could reach just under $722bn a year, the US $295.7bn, the EU $187bn, Japan $65.7bn and Britain $58.6bn.

According to the Institute for Health Metrics and Evaluation (IHME), deaths from AMR are expected to increase 60% by 2050, with 1.34 million people in the US and 184,000 in Britain alone predicted to die each year from antibiotic-resistant bugs, while numbers of those becoming seriously ill from drug-resistant bacteria are also expected to jump.

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Superbugs increase the number of hospital admissions and lead to longer and more intensive hospital stays, costlier second-line treatments and more complex care, meaning resistant infections are roughly twice as expensive to treat as those for which antibiotics are effective.

The study estimates global health costs of treating AMR could increase by just under $176bn a year.

Higher rates of resistant bugs would also shrink the British, EU and US workforces by 0.8%, 0.6% and 0.4% respectively, the study found.

The Guardian