Compositions for the inhibition of giardia lamblia

A method of treating and/or reducing the development of giardiasis in a subject, comprising administering a composition exhibiting a bile-salt hydrolase activity to a subject;

• wherein the composition is chosen from:
• a composition comprising at least one bile-salt hydrolase (BSH) enzyme, wherein the BSH enzyme has an amino acid sequence at least 95% identical to SEQ ID NO:
• 6;
• a composition comprising a lactic acid bacterium able to secrete at least one BSH enzyme, wherein the BSH enzyme has an amino acid sequence at least 95% identical to SEQ ID NO:
• 6, and wherein the lactic acid bacterium is not Lactobacillus johnsonii La1, Lactobacillus acidophilus, Bifidobacterium bifidum or Bifidobacterium infantis;
• and
• a combination thereof.