New research shows that the deaths of African children with sickle cell anaemia could be avoided if children are immunised against common infections and newborns are screened for this condition. Published in The Lancet, the results of the Euro-African study indicate that children succumb to this condition because their weak immune systems cannot fight off bacterial infections.
http://ec.europa.eu/research/headlines/news/article_09_09_30_en.html
http://www.scienceblog.com/cms/sickle-cell-study-boosts-call-improved-childhood-immunization-programs-africa-24992.html