translate English to French: Up to 10 years may elapse before profound immune system damage develops, but it may develop in more than 50% of infected persons before this immunodeficiency develops, and more than 20% of infected persons may develop this.
On parle de sida déclaré lorsqu'apparaissent des infections opportunistes particulièrement virulentes résultant de l'effondrement du système immunitaire. La pneumonie à Pneumocystis cariniitouche plus de 50 p.