Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Phase III Comparative (Double-blind, Double-dummy) Randomised Multicentre Study to Assess the Safety & Efficacy of Oral Pyronaridine Artesunate (180:60 mg) Versus Chloroquine (155 mg) in Children & Adult Patients With Acute Vivax Malaria
Brief Summary: The purpose of this study is to compare the efficacy and safety of the fixed combination of pyronaridine artesunate (Pyramax®, PA) (180:60 mg) with that of standard chloroquine therapy in children and adults with acute, uncomplicated Plasmodium vivax malaria.


Options:
A: Inclusion Criteria:

1. Male or female patients between the age of 3 and 60 years, inclusive.
2. Body weight between 20 kg and 90 kg with no clinical evidence of severe malnutrition.
3. Presence of acute uncomplicated P. vivax mono-infection confirmed by:

   * Fever, as defined by axillary/tympanic temperature ≥37.5°C or oral/rectal temperature ≥38°C, or history of fever in the previous 24 hours (history of fever must be documented) and,
   * Positive microscopy of P. vivax with parasite density ≥250/ mcL of blood (including at least 50% of asexual parasites).
4. Written informed consent, in accordance with local practice, provided by patient and/or parent/guardian/spouse. If the patient is unable to write, witnessed consent is permitted according to local ethical considerations.
5. Ability to swallow oral medication.
6. Ability and willingness to participate based on information given to patient or parent or guardian and access to health facility.

Exclusion Criteria:

1. Presence of a mixed Plasmodium infection.
2. Presence of other clinical condition requiring hospitalization.
3. Presence of significant anaemia, as defined by Hb \<8 g/dL.
4. Known history or evidence of clinically significant disorders such as cardiovascular (including arrhythmia, QTc interval ≥450 msec), respiratory (including active tuberculosis), hepatic, renal, gastrointestinal, immunological (including active HIV-AIDS), neurological (including auditory), endocrine, infectious, malignancy, psychiatric or other abnormality (including recent head trauma).
5. Known history of hypersensitivity, allergic or adverse reactions to pyronaridine, chloroquine or artesunate or other artemisinins.
6. Known history of hypersensitivity, allergic or adverse reactions to chloroquine, primaquine and related agents.
7. Known active Hepatitis A IgM (HAV-IgM), Hepatitis B surface antigen (HBsAg) or Hepatitis C antibody (HCV Ab).
8. Known seropositive HIV antibody.
9. Have received any antimalarial treatment in the preceding 2 weeks, as determined by history and, whenever feasible, by screening test.
10. Have received antibacterial with known antimalarial activity in the preceding 2 weeks.
11. Have received any investigational drug within the past 4 weeks.
12. Liver function tests (AST/ALT levels) \>2.5 times the upper limit of normal range.
13. Known significant renal impairment as indicated by serum creatinine levels of \>1.4 mg/dL.
14. Female patients of child-bearing potential must be neither pregnant (as demonstrated by a negative pregnancy test) nor lactating, and must be willing to take measures to not become pregnant during the study period.
15. Previous participation in the present clinical trial with PA.
B: Inclusion Criteria:

* Male or female patients between the ages of 3 and 60 years, inclusive.
* Body weight between 20 kg and 90 kg with no clinical evidence of severe malnutrition.
* Presence of acute uncomplicated P. falciparum mono-infection confirmed by:

  1. Fever, as defined by axillary/tympanic temperature ≥37.5°C or oral/rectal temperature ≥38°C, or documented history of fever in the previous 24 hours and,
  2. Positive microscopy of P. falciparum with parasite density between 1,000 and 100,000 asexual parasite count/µl of blood
* Written informed consent provided by patient and/or parent/guardian/spouse.
* Ability to swallow oral medication.

Exclusion Criteria:

* Patients with signs and symptoms of severe/complicated malaria requiring parenteral treatment according to the World Health Organization Criteria 2000.
* Mixed Plasmodium infection.
* Severe vomiting or severe diarrhoea.
* Known history or evidence of clinically significant disorders.
* Presence of significant anaemia, as defined by Hb \<8 g/dL.
* Presence of febrile conditions caused by diseases other than malaria.
* Known history of hypersensitivity, allergic or adverse reactions to pyronaridine, mefloquine or artesunate or other artemisinins.
* Use of any other antimalarial agent within 2 weeks prior to start of the study as evidenced by positive urine test.
* Female patients of child-bearing potential must be neither pregnant (as demonstrated by a negative pregnancy test) nor lactating, and must be willing to take measures to not become pregnant during the study period.
* Presence of significant renal or hepatic impairment.
* Receipt of an investigational drug within the past 4 weeks.
* Known active Hepatitis A IgM, Hepatitis B surface antigen or Hepatitis C antibody.
* Known seropositive HIV antibody.
* Previous participation in any clinical study with PA.
C: Inclusion Criteria:

* Uncomplicated falciparum or vivax malaria or mixed species infection, as confirmed in a peripheral blood slide.
* No signs of severe malaria
* Age over three months.
* Non-pregnant, (test for β-HCG in women of child-bearing age).
* Weight ≥5 kg
* Willingness to participate and written informed consent provided by the patient or in case of children by attending guardians/parents.
* Not enrolled in any other investigational drug study in the previous month

Exclusion Criteria:

* Clinical or laboratory features suggesting severe malaria.
* Known cardiac, renal, hepatic or other severe disease, or requirement for hospital treatment
* Recurrent vomiting.
* Not eligible for follow-up.
* Lactating mother
* Hyperparasitemia of P. falciparum \> 100,000/µL
* Treatment with Artesunate or Chloroquine in the past one month, Fansidar in the past one and the half months and Artekin in past 3 months.
D: Inclusion Criteria:

* Children \>5yrs and adults presenting with acute falciparum malaria (N=40) to Pailin hospital will be eligible for inclusion in this study provided that

  * They or their parents/guardians give fully informed consent.
  * They are not pregnant.
  * They have not received antimalarial drugs in the previous 48 hours.
  * P.falciparum parasitaemia exceeds 10,000/uL

Exclusion Criteria:

* Mixed infection (such as vivax malaria), history of allergy to artesunate or mefloquine, any sign of severe disease according to WHO criteria

Answer: A