WHO urges scientists to develop more vaccines to ‘silent pandemic’
The World Health Organisation (WHO) has urged scientists to develop more vaccines to tackle antimicrobial-resistant (AMR) bacterial pathogens, urging countries to make better use of the ones currently available.
The UN agency has released its first-ever report on the pipeline of vaccines currently in development, geared at guiding further investment and research.
Antimicrobial resistance occurs when bacteria, viruses, fungi, and parasites change over time and no longer respond to medicines, making infections harder to treat and increasing the risk of disease spread, severe illness and death.
This silent pandemic is a major growing public health concern, according to the WHO.
Resistant bacterial infections alone are associated with nearly five million deaths a year, and more than 1.2 million deaths are directly attributed to AMR.
The report identified 61 vaccine candidates, including several in late stages of development though most will not be available anytime soon.
Preventing infections using vaccination reduced the use of antibiotics, one of the main drivers of AMR, Hanan Balkhy, WHO Assistant Director-General for Antimicrobial Resistance, said.
However, out of the top six bacterial pathogens responsible for deaths due to AMR, only one – pneumococcal disease – has a vaccine.
“Affordable and equitable access to life-saving vaccines such as those against pneumococcus, are urgently needed to save lives, and mitigate the rise of AMR,” she said.
WHO also called for equitable and global access to the vaccines that already exist, such as those against four priority bacterial pathogens that include pneumococcal disease, tuberculosis and typhoid.
“Disruptive approaches are needed to enrich the pipeline and accelerate vaccine development. The lessons from COVID-19 vaccine development and mRNA vaccines offer unique opportunities to explore for developing vaccines against bacteria,” said Haileyesus Getahun, director of the agency’s AMR Global Coordination Department.
The report also looked at challenges facing vaccine innovation and development, including for pathogens associated with hospital-acquired infections.
Issues include the difficulty in defining target populations among all admitted hospital patients, the cost and complexity of vaccine efficacy trials, and the lack of regulatory or policy precedent for vaccines against infections.
(NAN)
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