Safe cryopreservation of sperm and embryos

Sue M. Avery, Eileen A. McLaughlin, Karin J. Dawson

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


In 1995, a cluster of six cases of hepatitis B infection was detected after transplantation of bone marrow or peripheral blood stem cells (Tedder et al., 1995). In four of these cases, infection appeared to have originated from a single infected
bone marrow sample stored in the same liquid nitrogen tank as non-infected samples (Hawkins et al., 1996). Hepatitis B viral DNA was found in detritus extracted from the storage tank. Contamination of the liquid nitrogen appeared to have occurred as a result of the infected material coming into contact
with the liquid nitrogen through unsealed parts of the cryopreservation bag.
Original languageEnglish
Pages (from-to)84-86
Number of pages3
JournalHuman Fertility
Publication statusPublished - 1998
Externally publishedYes


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