CD4 and HIV infectious disease: A total of 484 participants with newly reported HIV infections were recruited and 463 sequences were successfully obtained, including for 348 males (75.16%), 342 individuals aged ≥50 (73.87%), 368 farmers (79.48%), 218 individuals of primary school education level (47.08%), 291 wedlock individuals (62.85%), 443 cases of heterosexual transmission (95.68%), 443 cases with no drug resistance (95.68%), and 243 cases with a first CD4+ cell count > 200/mm3 (52.48%) (Table 1).