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“All things are poison and not without poison; only the dose makes a thing not a poison” Philippus Aureolus Theophrastus Bombastus von Hohenheim, also known as Paracelsus (1493–1541).

A press release from Wellcome Trust Sanger Institute raised a lot of concern. Based on a scientific paper published in Nature

           Magnus Manske, Olivo Miotto, Susana Campino, Sarah Auburn, Jacob Almagro-Garcia, Gareth Maslen, Jack O’Brien, Abdoulaye Djimde, Analysis of Plasmodium falciparum diversity in natural infections by deep sequencing. Nature 487, 375–379, 19 July 2012doi:10.1038/nature11174

Studies from 2009 already asked the same question

Several scientific papers have disappeared from internet.

For example the clinical trials with Artemisia annua in RD Congo from 2000 (attachment 1)

(M.S. Mueller , I.B. Karhagomba , H.M. Hirt , E. Wemakor. The potential of Artemisia annua L. as a locally produced remedy for malaria in the tropics: agricultural, chemical and clinical aspects. Journal of Ethnopharmacology 73 (2000) 487–493)

and clinical trials  2002 (attachment 2)

It was dicovered by a Yugoslav chemist called Milutin Stefanovic.

Proanthocyanidins (condensed tannins) are oligomeric and polymeric products of the flavonoid biosynthetic pathway. They are present in the fruits, bark, leaves and seeds of many plants, wine and teas, and are increasingly recognized as having beneficial effects on human health. They have attracted little interest in malaria research because in vitro they show no significant antimalarial activity.