Superbugs which pose greatest threat to humanity identified by World Health Organisation

Superbugs which cause sepsis, pneumonia, and salmonella will soon be resistant to antibiotics, the World Health Organisation has warned as it called on governments to stop relying on pharmaceutical companies to solve the crisis. 

Health officials have drawn up a list of 12 types of bacteria which pose the "greatest threat to human health" because soon no drugs will be able to fight them off. 

Experts have previously warned that resistance to the drugs that are used to fight infections could cause a bigger threat to mankind than cancer.

If antibiotics lose their effectiveness, key medical procedures - including organ transplantation, Caesarean sections, joint replacements and chemotherapy - could become too dangerous to perform.

Around 700,000 people around the world die annually due to drug-resistant infections and, if no action is taken, it has been estimated that such infections will kill 10 million people a year by 2050.

Now, the WHO has come up with a list of antibiotic-resistant "priority pathogens" - 12 families of bacteria that pose the greatest threat to human health.

Medical research charity the Wellcome Trust said that the list was important to steer research into new antibiotics.

The bacteria on this list can cause severe and often deadly infections such as bloodstream infections and pneumonia and the most critical group includes multi-drug resistant bacteria that pose a particular threat in hospitals and nursing homes.

Other increasingly drug-resistant bacteria, which are deemed 'high' and medium' priority, cause more common diseases such as gonorrhoea and food poisoning caused by salmonella.

"Antibiotic resistance is growing and we are fast running out of treatment options," said Dr Marie-Paule Kieny, WHO's assistant director-general for health systems and innovation.

"If we leave it to market forces alone, the new antibiotics we most urgently need are not going to be developed in time."

In numbers | Antibiotic resistance

The WHO said that it hoped the list would spur governments to put in place policies to incentivise the development of new drugs.

Experts came up with the list by examining a number of criteria, including how deadly the infections the bacteria cause are and whether new antibiotics to treat them are already in the pipeline.

Commenting on the publication of the list, Tim Jinks, head of drug resistant infections at Wellcome Trust, said: "This priority pathogens list, developed with input from across our community, is important to steer research in the race against drug resistant infection - one of the greatest threats to modern health.

"Without effective drugs, doctors cannot treat patients.

"Within a generation, without new antibiotics, deaths from drug resistant infection could reach 10 million a year.

"Without new medicines to treat deadly infection, lifesaving treatments like chemotherapy and organ transplant, and routine operations like caesareans and hip replacements will be potentially fatal.

"Wellcome is committed to helping tackle this growing problem, guided by WHO priorities."

At a glance | Antimicrobial resistance

Here is the full list of the bacteria, broken down according to the urgency of need for new antibiotics.

These are considered to be of "critical" priority.

Acinetobacter baumannii, carbapenem-resistant

Pseudomonas aeruginosa, carbapenem-resistant

Enterobacteriaceae, carbapenem-resistant, ESBL-producing

The following are considered to be of "high" priority.

Enterococcus faecium, vancomycin-resistant

Staphylococcus aureus, methicillin-resistant, vancomycin-intermediate and resistant

Helicobacter pylori, clarithromycin-resistant

Campylobacter spp., fluoroquinolone-resistant

Salmonellae, fluoroquinolone-resistant

Neisseria gonorrhoeae, cephalosporin-resistant, fluoroquinolone-resistant

The final three are deemed to be of "medium" priority.

Streptococcus pneumoniae, penicillin-non-susceptible

Haemophilus influenzae, ampicillin-resistant

Shigella spp., fluoroquinolone-resistant