Papers And Originals Attenuation of human influenza a viruses Br Med J 1969; 4 doi: https://doi.org/10.1136/bmj.4.5677.198 (Published 25 October 1969) Cite this as: Br Med J 1969;4:198 Article Related content Metrics Responses Peer review Related articles No related articles found. See more Antibiotic costs rise 1100% as big pharma exits Nigeria BMJ March 01, 2024, 384 q328; DOI: https://doi.org/10.1136/bmj.q328 Measles: 500 cases are confirmed in England as clusters appear around the country BMJ February 15, 2024, 384 q417; DOI: https://doi.org/10.1136/bmj.q417 Alaskapox: First human death from zoonotic virus is announced BMJ February 15, 2024, 384 q415; DOI: https://doi.org/10.1136/bmj.q415 Diphtheria: WHO publishes first ever guidance following outbreaks BMJ February 14, 2024, 384 q407; DOI: https://doi.org/10.1136/bmj.q407 Measles: Man dies in Ireland, while cases in West Midlands remain “disproportionately high” BMJ February 09, 2024, 384 q359; DOI: https://doi.org/10.1136/bmj.q359