Una alergia es una afección en la que una sustancia extraña (alérgeno) desenc...
Algunas alergias son estacionales, mientras que otras son durante todo el año. ...
All those suffering from seasonal or environmental allergies may have noticed th...
An allergy is a condition where a foreign substance (allergen) triggers an immun...
Some allergies are seasonal, while some are year-round. Either way, these allerg...
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