The level of neutralizing antibody against spike protein significantly increases after Bacillus subtilis extract consumption.
- Neutralizing antibodies in volunteers (Registered on ClinicalTrials.gov)
- Pre-test: July 2021(By Hong Kong Registered Laboratory)
- Subjects were divided into two groups :
Vaccinated (More than 4 months)
Clinical studies registered in National Institutes of Health (NIH)
- Neutralizing antibodies in volunteers (Registered with the Chinese Clinical Trial Registry)
- Pre-test: July 2021 (By Hong Kong Registered Laboratory)