Yes, teratozoospermia can affect both live and dead sperm.
Dead sperm do not have an abnormal morphology in all cases. Sometimes, they are confused with immotile sperm, and performing a dye test is necessary to determine whether they are actually viable or not.
Read the full article on: Are the causes of teratozoospermia reversible or not? ( 58).

Zaira Salvador
B.Sc., M.Sc.
Bachelor's Degree in Biotechnology from the Technical University of Valencia (UPV). Biotechnology Degree from the National University of Ireland en Galway (NUIG) and embryologist specializing in Assisted Reproduction, with a Master's Degree in Biotechnology of Human Reproduction from the University of Valencia (UV) and the Valencian Infertility Institute (IVI)
License: 3185-CV