What is the نوسيما سيرانا prevalence in the world? A new study, published in Apidologie, conducted a systematic review and meta-analysis to estimate the global, regional, and country-level prevalence of this pathogen in European honey bee colonies and apiaries and to investigate associated risk factors, indicating that almost 40% of honey bee colonies and more than one-third of apiaries worldwide were affected by Nosema ceranae.

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