Malaria comes from a tiny bite, so dream books read it as something small that caused far-reaching trouble, or a fever of feeling that comes and goes in waves.
Where in your waking life have you met something like this lately?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.