Cryptosporidium parvum and gp60 genotype prevalence in dairy calves worldwide: a systematic review and meta-analysis

Frequency and Molecular Identification of Cryptosporidium in Adult Prim’Holstein Dairy Cattle Farms in the North of France

“…Concerning the species identified in the current study, all of them have been reported in cattle worldwide [ 5 ] and in particular in France ( Table 3 ). According to the phylogenetic tree, the sequences obtained in this study were grouped with known reference sequences already reported in dairy cattle.…”

“…In a previous survey in the Hauts-de-France, it was reported that the most predominant species (42.8%) in adult dairy cattle was C. bovis [ 13 ], while in a follow-up performed in the same area by the same group, C. andersoni was the most prevalent species (57.14%) followed by C. bovis (28.57%) [ 31 ]. Different factors may explain this difference in prevalence and species distribution in the same country such as sampling size, type of breed, farm management practices (intensive, semi-intensive or extensive), farm location (urban/rural) or feeding system among others [ 5 , 32 ].…”

“…Cryptosporidium parasites have low infective doses as shown in human volunteers [ 3 ] and animal models [ 4 ], and oocysts are very resistant to environmental and water treatment [ 1 ]. Until now, 44 Cryptosporidium species and more than 120 genotypes have been recognized [ 5 ]. The predominant Cryptosporidium species infecting humans are C. parvum and C. hominis , while C. bovis , C. ryanae , and C. andersoni , together with C. parvum , are the causal agents of bovine Cryptosporidium infection, even if additional species have also been reported in sporadic cases, such as C. felis , C. hominis , C. suis , C. canis , C. scrofarum , C. tyzzeri or C. serpentis [ 6 ].…”

“…C. parvum has the ability to infect multiple animal hosts, and it is the primary zoonotic cause of cryptosporidiosis [ 7 ]. Strikingly, almost 100% of dairy cattle worldwide are infected with C. parvum at some point during their lives [ 5 ].…”

Prevalence, risk factors and molecular epidemiology of neonatal cryptosporidiosis in calves: The Argentine perspective

“…Infectious diarrhoea of neonatal calves caused by enteropathogens is an ongoing concern for dairy production systems worldwide ( Foster and Smith, 2009 ; Vermeulen et al, 2017 ; Tomazic et al, 2018 ; Chen et al, 2023 ). Currently, there are no effective prevention and treatment methods, and the costs related to veterinary care of affected animals are high.…”