A serum antitoxin level of at least 0.01 IU/mL is described as protective, making tetanus unlikely.
Answer
true
Explanation
The slide states that a serum antitoxin level of **≥ 0.01 IU/mL** is protective and that tetanus is then unlikely. This does not change the stated primary basis of diagnosis, which is clinical. **Key takeaway:** The source uses 0.01 IU/mL as the protective threshold.\n\n**Glossary:** **Antitoxin**: an antibody or preparation that neutralizes a toxin.