Malaria infection. Diabetes and malaria?

Detected with Malaria after suffering with high fever 104 F for 5 days. Currently hospitalized. Came to know that 2 types of malarial parasites are positive. 1) P. Vivax and 2) P. Falciparum . Currently on malarial medication. And also he is diagnosed with diabetes in these 5 days. I have 3 queries now. 1) he has no chills and shivering . So little bit worried whether we are on correct medication . Pls explain the possibility of malaria with out chills. 2) read in some medical columns that vivax and falciparum parasites will hibernate in liver and malaria will relapse again. How do we confirm that it is completely cured.? 3) diagnosed with type 2 diabetes now and no hereditary diabetes in his family line. Hba1 c test came as 9.3. Is there any link with diabetes and malaria ?? Because he has no symptoms and signs of diabetes before