CD40LG and hepatitis A virus infection: A similar analysis carried out in another laboratory has challenged these findings by documenting higher reactivity of the serum samples in the acute phase of hepatitis A against VP1 (98% IgM, 94% IgG), followed by VP0 (35% IgM, 88% IgG) and VP3 (29% IgM, 73% IgG); while individuals with past exposure to HAV have comparatively higher reactivity with VP3 (73%) than VP1 (29%) and VP0 (29%) (7).