CD40LG and infection: This study tested a total of 1732 bovines and found that 5.0% (87/1732) were Anaplasma IgG positive, 4.2% (73/1732) were Anaplasma IgM positive and 1.4% (24/1732) were both IgG and IgM positive, indicating that bovines are among those animals that can develop acute infections and middle and late infections in this plateau area.