Final answer:
A child born without a thymus would have severe immunodeficiency and be highly susceptible to infections. They would need to be placed in a germ-free environment to minimize the risk of infection.
Step-by-step explanation:
A child born without a thymus would experience severe immunodeficiency and be highly susceptible to infections. The thymus is responsible for producing mature T cells, which are crucial for immune system functioning. Without a thymus, the child's immune system would be severely compromised, making them vulnerable to various pathogens.
Due to their weakened immune system, a child born without a thymus would need to be placed in a germ-free environment to minimize the risk of infection. Any exposure to bacteria, viruses, or other pathogens could have severe consequences for the child's health. A germ-free environment would help protect the child and reduce the chances of acquiring life-threatening infections.