Tom's enthusiasm is infectious.
El entusiasmo de Tom es contagioso.
Laughter is infectious.
La risa es contagiosa.
Botulism, brucellosis, Lyme-disease and tetanus are infectious, but not contagious diseases.
El botulismo, la brucelosis, la enfermedad de Lyme y el tétanos son enfermedades infecciosas, pero no contagiosas.
Not all the infectious diseases are contagious.
No todas las enfermedades infecciosas son contagiosas.
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