Dynamics of antibody titers and cellular immunity among Japanese healthcare workers during the 6 months after receiving two doses of BNT162b2 mRNA vaccine

Yoshifumi Uwamino, Toshinobu Kurafuji, Kumiko Takato, Akiko Sakai, Akiko Tanabe, Masayo Noguchi, Yoko Yatabe, Tomoko Arai, Akemi Ohno, Yukari Tomita, Ayako Shibata, Hiromitsu Yokota, Wakako Yamasawa, Ho Namkoong, Yasunori Sato, Naoki Hasegawa, Masatoshi Wakui, Mitsuru Murata