Final answer:
The prodromal stage of inhalation anthrax manifests as a latent period with flu-like symptoms such as nausea, cough, and dyspnea, progressing to pulmonary edema.
Step-by-step explanation:
The prodromal stage in a client with inhalation anthrax usually begins with a latent period of 4-8 hours followed by flu-like signs and symptoms. Progression occurs within 18-24 hours of inhalation and includes nausea, cough, dyspnea, and pulmonary edema. During this stage, the Bacillus anthracis pathogen continues to multiply, and the host experiences general signs and symptoms resulting from the activation of the immune system.