MRCP UK EXAMINATIONS

A worker of the agricultural enterprise presented with an acute disease and died soon of intoxication. An autopsy revealed the enlarged and flaccid spleen with a dark-cherry coloring of a cut surface. There were a superfluous pulp’s scrape from the lien cut surface. Arachnoids of the brain’s fornix and base were edematous, impregnated by blood (’red cap’ or ‘cardinal’s hat’). Microscopical investigation found the serous-hemorrhagic inflammation of brain’s membranes and cerebral tissues. What is the most likely diagnosis?