Immunizations are less effective in malnourished children because immunizations are actually more effective because of the small body size. their blood circulation is too slow. their immune systems are compromised. their body tissues are growing too slowly.

Immune systems of malnourished children are compromised.

Explanation:

Immunizations in malnourished kids are less powerful on the grounds that their immune system is frail and can not react ordinarily to the procedure of inoculation.

Administrating immunizations to such kids can't enact their immune systems on the grounds that frail response are acquired and are not ready to deliver sufficient antibodies against pathogens or antigens.