To evaluate the changes in the microcirculation of the liver, kidney and spleen during acute infection in patients with malaria (cohorts 1 and 3) and other infectious diseases such as acute pyelonephritis at day 0 (within 8 hours of the treatment start), day 2 to 4 and day 28-32, using functional US with continuous infusion of a contrast agent (SonoVue, Bracco, Italy).~Three cohortes will be studied: cohorte 1 infection at Plasmodium falciparum (24 patients), cohorte 3 infection at Plasmodium vivax, ovale or malariae (5 patients) and cohorte 2 other infectious diseases such as acute pyelonephritis (24 patients).~Study hypothesis: malaria patients should exhibit a different pattern of enhancement, particularly when quantitative measurements of the SU signals is performed with destruction reperfusion kinetics.
To evaluate the changes in the microcirculation of the liver, kidney and spleen during acute infection in patients with malaria (cohorts 1 and 3) and other infectious diseases such as acute pyelonephritis at day 0 (within 8 hours of the treatment start), day 2 to 4 and day 28-32, using functional US with continuous infusion of a contrast agent (SonoVue, Bracco, Italy).~Study hypothesis: malaria patients should exhibit a different pattern of enhancement, particularly when quantitative measurements of the SU signals is performed with destruction reperfusion kinetics.