Insights on Covid-19 with superimposed pulmonary histoplasmosis: The possible nexus

Immun Inflamm Dis. 2023 Sep;11(9):e989. doi: 10.1002/iid3.989.

Abstract

A novel coronavirus (CoV) known as severe acute respiratory syndrome CoV type 2 is the causative agent for the development of CoV disease 2019 (Covid-19). Covid-19 may increase the risk of developing pulmonary histoplasmosis due to immune dysregulation. In addition, Covid-19 may enhance the propagation of acute pulmonary histoplasmosis due to lung injury and inflammation, and using corticosteroids in severely affected Covid-19 patients may reactivate latent pulmonary histoplasmosis. Likewise, activation of inflammatory signaling pathways during H. capsulatum infection may increase the severity of Covid-19 and vice versa. Furthermore, lymphopenia in Covid-19 may increase the risk for the progress of pulmonary histoplasmosis besides activation of inflammatory signaling pathways during H. capsulatum infection may increase the severity of Covid-19 and vice versa. Therefore, this critical review aimed to find the potential link between Covid-19 pneumonia and pulmonary histoplasmosis concerning the immunological response.

Keywords: Covid-19; inflammatory signaling pathways; pulmonary histoplasmosis.

Publication types

  • Review
  • Research Support, Non-U.S. Gov't

MeSH terms

  • COVID-19* / complications
  • Histoplasmosis* / complications
  • Humans
  • Inflammation
  • Lung Diseases, Fungal* / complications
  • Lymphopenia*
  • SARS-CoV-2