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. 2021 Oct 13;26(20):6183. doi: 10.3390/molecules26206183

Table 4.

Microbiological spermogram before and after the use of hygiene protocol and the biosecurity of sperm collection (HPBC).

Bacterial Burden
(103 CFU/mL)
Fungal Burden
(103 CFU/mL)
Raw Semen Diluted Semen Raw Semen Diluted Semen
Before (HPBC) 62.39 0.125 0.155 0.153
After (HPBC) 31.29 0.016 0.140 0.139
CFU Evolution (%) −49.85% −87.2% −9.67% −915%
Statistical Significance (p) <0.00001 (yes) 0.000726 (yes) 0.111491 (no) 0.08078 (no)

HPBC = Hygiene Protocol and the Biosecurity of sperm Collection. HPBC is highly effective against bacterial contamination of semen—both raw (p < 0.00001) and diluted (p = 0.000726)—but seems to have no effect against fungal burden (p > 0.05).