The Epidemiological Nexus: Age, Geography, and Infectious Disease in Egyptian Cattle

Abstract

Infectious diseases impose a severe constraint on cattle productivity, food security, and the national economy in Egypt. The susceptibility to, and manifestation of, these diseases are profoundly influenced by the age of the host animal, a factor often overlooked in broad control strategies. This review systematically synthesizes the scientific literature on Egypt's major bovine infectious diseases to elucidate the critical correlation between host age and disease epidemiology and to map the associated geographical distribution patterns. Our analysis reveals distinct age-specific syndromes: neonates (0-1 month) are dominated by enteric pathogens like E. coli and Cryptosporidium; growing calves (1-12 months) are most susceptible to severe outcomes from foot-and-mouth disease (FMD) and bovine viral diarrhea virus (BVDV) persistence; while adult cattle are most impacted by production diseases such as brucellosis, mastitis, and chronic fascioliasis. Geographically, the Nile Delta is identified as a multifactorial hotspot due to high animal density, intensive farming, and irrigation networks, whereas Upper Egypt and newly reclaimed areas exhibit distinct outbreak dynamics. The movement of specific age cohorts, such as pregnant heifers and weaned calves, is a key driver of disease spread. This synthesis underscores the imperative for a dual-targeting control strategy: implementing age-specific interventions within defined geographical risk zones. We conclude with evidence-based recommendations for age-stratified surveillance, vaccination, and management practices tailored to Egypt's diverse farming systems to enhance disease control and livestock productivity.