How to Say "aids" in Spanish
The Spanish word for “aids” is “sida” — B2 level. This is a very common word in everyday Spanish.

Examples
La prevención del sida es una prioridad de salud pública.
AIDS prevention is a public health priority.
Se ha avanzado mucho en el tratamiento del sida en las últimas décadas.
Much progress has been made in AIDS treatment in recent decades.
El sida es causado por el virus VIH.
AIDS is caused by the HIV virus.
Masculine Gender Rule
Even though 'sida' ends in 'a', it is a masculine noun ('el sida'). This is because it is an acronym for Síndrome de Inmunodeficiencia Adquirida, and the core word síndrome (syndrome) is masculine.
Using the Feminine Article
Mistake: “La sida”
Correction: El sida. Remember to use the masculine article 'el' because the word is grammatically masculine.
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