Infections Linked to Roughly One in Eight New Cancer Diagnoses Worldwide
New global estimates indicate that about 2.3 million cancer diagnoses in 2024, or one in eight, were tied to infections. Helicobacter pylori and HPV were responsible for the largest shares, while eastern Asia accounted for 42% of the worldwide total. The investigators say many of these infections can be prevented or treated before cancer arises, and they urge broader HPV vaccination, H. pylori screening and treatment, and long-acting injectable HIV PrEP, particularly in low- and middle-income countries.
A new worldwide estimate for 2024 counted roughly 2.3 million cancer diagnoses tied to infections, equal to one in every eight new cases. It is described as the first such global assessment to factor HIV into the calculation.
H. pylori accounted for about 760,000 cases and HPV about 750,000, the two biggest contributors. Eastern Asia represented 42% of the global burden. Since many of these infections can be stopped or treated before malignancy appears, researchers emphasize broader HPV shots, H. pylori testing and treatment, and long-acting injectable HIV prevention, particularly in lower-resource countries.
These findings may shape how health systems prioritize cancer prevention, especially in regions with high infection-linked burden. People in low- and middle-income countries could benefit most if vaccination, screening, and HIV prevention become more available, potentially reducing future cancer diagnoses and treatment costs. Individuals and families may face less illness and financial strain, while policymakers could use the estimates to target limited resources. But impact depends on access, uptake, and health system capacity.