In this study the investigators will explore the effect of the BNT162b2 COVID-19 Vaccine on semen analysis parameters among 75 fertile men. Fertile men will be regarded as such if they previously successfully impregnated their partners without the use of artificial reproductive technology, or men who previously had a normal sperm analysis exam by WHO criteria (2010). Those recruited will supply a single sperm sample 1-2 months following the second dose of the vaccination. In addition, the participants will fill a brief questionnaire with information regarding their medical and reproductive history. The investigators will examine the macroscopic and microscopic properties of the semen samples and compare them to the WHO semen analysis reference range in an attempt to ascertain whether the vaccine influences sperm parameters.
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Sperm Concentration (10^6/ml)
Timeframe: 1-2 months after the second COVID-19 vaccine
Sperm Motility (%)
Timeframe: 1-2 months after the second COVID-19 vaccine
White Blood Cells (10^6/ml) in Semen
Timeframe: 1-2 months after the second COVID-19 vaccine
Sperm Morphology (%)
Timeframe: 1-2 months after the second COVID-19 vaccine
Sperm Vitality (%)
Timeframe: 1-2 months after the second COVID-19 vaccine
Semen Liquefaction (normal/abnormal)
Timeframe: 1-2 months after the second COVID-19 vaccine
Semen Viscosity (normal/abnormal)
Timeframe: 1-2 months after the second COVID-19 vaccine
Semen Color
Timeframe: 1-2 months after the second COVID-19 vaccine
Semen PH
Timeframe: 1-2 months after the second COVID-19 vaccine
Semen Volume (ml)
Timeframe: 1-2 months after the second COVID-19 vaccine