So the team analyzed hundreds of malaria samples from seven countries, sequencing two genes to determine genetic variability within each local population, all the way from West Africa to Indonesia and Oceania.
The authors wish to thank Dyann Wirth for providing malaria samples.
There are several active large sequencing programs (e.g. MalariaGEN [ 13]) that are currently aiming to sequence thousands of clinical malaria samples.
However, two urine samples from patients with OD, notably TB and malaria were positive by the Leishmania Antigen ELISA, displaying antigens well above the lower threshold of detection defined by the standard curve while three other malaria samples were borderline positive, harbouring between 40-45UAU/mL 40-45UAU/mL
82 The LDR-FMA was tested on cultured malaria samples and had a concordance > 90% with microscopy and a limit of detection of 20 parasites/μL of blood, which was determined on the basis of the lowest parasitemia measured by microscopy that was positive by LDR-FMA.
Regarding the malaria case acquired by blood transfusion previously reported [ 21], the P. malariae sample obtained from the donor (72) showed the same sequence as the recipient's (58).
We calculated ROE Mixed, ROE Negative or ROE Pm the ratio of observed/expected (and 95% CI) amongst values that deviated from expected mixed, negative or P. malariae samples, as a measure of the magnitude of the deviation from randomness.
From the eight P. malariae samples, five different sequences were recorded, while each of the five P. brasilianum samples presented a unique sequence.
DNA extracted from the known P. falciparum samples was used as positive control while from confirmed malaria negative sample was used as negative control for PCR assays.
Among these last samples, two were obtained from patients involved in a case of transfusion malaria: one sample was obtained from a splenectomized patient (58) who was infected by blood transfusion and another from her blood donor, an asymptomatic carrier (72), who probably acquired the infection in the location of Palestina, Juquitiba [ 21].
