There are three types of malaria. Two are only deadly if left untreated and if the person is already weakened. Treatment is, I have heard, a PITA and bad but not worth skipping a trip for. One (falciparum) can kill in three days. Falciparum is hyper-endemic in southern Zambia.
I personally would go to a travel doctor, bring medicine to treat both types, sleep under a net, take EVERY precaution (no sunset safaris!), and go to areas that do not have higher incidences of malaria. No riverboat tours during biting hours.
Bring a permanet and keep it in your carry on.
I don't know if I'd do insect repellant... we were in an area with vivax malaria so I never considered it but if severe malaria were a risk, I dunno. Tough call. Have a good trip!
(PS If you can get the typhoid vaccine yourself and you are still breastfeeding a lot, I would do it. It is a really mild vaccine and baby will get some of the antibodies as well.)
It's not that the stay-at-home-parent gets to stay home with the kids. The kids get to stay home with a parent. Lucky Mom to DD1 (4 y) and DD2 (18 mo), Wife to Mercenary Dad