High levels of drug resistance in bacteria that often cause bloodstream infections in hospitals emerged in the first year of the pandemic, a World Health Organization report based on data from 87 countries in 2020 found. Concerns about so-called superbugs—pathogens that are resistant to existing drugs—are hardly new.
Long-term overuse and/or misuse of existing therapies, especially antibiotics, has helped microbes become resistant to many treatments, while the number of replacement therapies in development is limited. A WHO report showed levels of more than 50% resistance in bacteria that typically cause life-threatening bloodstream infections in hospitals, such as Klebsiella pneumoniae and Acinetobacter spp.
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