Monomeric VHH domain derived from anti-VP6 camelid antibodies, dimeric domain, immunisation method, rotavirus detection method, composition, prevention and treatment methods for rotavirus infections

A rotavirus immunodetection method, said method comprising:

• a) contacting a rotavirus-containing sample with an amino acid sequence comprising SEQ ID NO:
• 4;
• and b) detecting the rotavirus.

A kit for immunodetection of rotavirus comprising an amino acid sequence comprising SEQ ID NO:

• 4.

An amino acid sequence comprising SEQ ID NO:

• 4, for use in a method for the treatment of infections produced by rotavirus.

A method for treating infections produced by Group A rotavirus, said method comprising administering an effective quantity of an amino acid sequence comprising SEQ ID NO:

• 4 to a mammal that needs it.