Previous work [28], [29], including a study from our own group [30], additionally identified helminth-specific antibodies as essential components of immunity against Hp. Passive transfer of IgG or immune serum could also confer resistance to Hp, Ascaris suum and Strongyloides ratti[31], [32], [33], and antibody production has been found to correlate with protection in human helminth infection [34], [35], [36]. Here, HP is linked to helminthiasis.