Soloshot syringes, 1994.
© Science Museum / Science & Society Picture Library
Manufactured by Beeton Dickinson & Co, New Jersey, United States and supplied by the UNICEF Supply Division, Copenhagen, Denmark. Soloshot syringes are made for single use only, to help prevent the spread of AIDS. They cannot be refilled after use because the plunger has a ratchet preventing it from being pulled out again. Approved by UNICEF and the World Health Organisation (WHO) for use in the Expanded Programme on Immunisation (EPI).