Final answer:
Varicella is the condition from the options provided that is included on the Nationally Notifiable Infectious Conditions list; it features a contagious pustular rash and is preventable by vaccination.
Step-by-step explanation:
The condition from the options given by the student that is included on the Nationally Notifiable Infectious Conditions list is Varicella, commonly known as chickenpox. Varicella is a highly contagious viral infection that presents with fever, chills, and a pustular rash, which forms crusty scabs when it bursts. It can be transmitted via contact with respiratory secretions, skin rashes, or eye secretions from an infected individual. Unlike other conditions mentioned, such as gastric ulcerations, respiratory syncytial virus spreading, and asthma exacerbation (status asthmaticus), Varicella is included in this list because it is preventable by vaccine and has the potential for outbreaks, making surveillance and reporting critical for public health management.