06 January 2022
: Case report 
A 48-Year-Old Previously Healthy Man Presenting with Acute Respiratory Distress Syndrome (ARDS), Negative Tests for SARS-CoV-2, and Positive Serology for Parainfluenza Virus Type 3 (PIV-3)
Challenging differential diagnosis, Rare disease
Ryuichiro Kakizaki
1ABDEF*, Ryutaro Tojo1AB, Naofumi Bunya 1BD, Hirotoshi Mizuno1BD, Shuji Uemura1D, Eichi Narimatsu1DE
DOI: 10.12659/AJCR.934362
Am J Case Rep 2022; 23:e934362
Table 2. The results of microbiological tests.
| Cultures | |
| Sputum | (–) |
| BALF | (–) |
| Mycoplasma antigen | (–) |
| IgG | (–) |
| IgM | (–) |
| Cultures | |
| Sputum | (–) |
| BALF | (–) |
| Aspergillus antigen | (–) |
| Candida antigen | (–) |
| Beta-D-glucan | (–) |
| HIV-1/HIV-2 antibody | (–) |
| HTLV-1 antibody | (–) |
| CMV IgM | (–) |
| HSV IgM | (–) |
| VZV IgM | (–) |
| EBV IgM | (–) |
| Influenza virus antigen | (–) |
| Adenovirus antigen | (–) |
| RSV antigen | (–) |
| hMPV antigen | (–) |
| SARS-CoV-2 PCR | (–) |
| BALF – bronchoalveolar lavage fluid; IgG – immunoglobulin G; IgM – immunoglobulin M; HIV – human immunodeficiency virus; HTLV – human T-lymphotropic virus; CMV – cytomegalovirus; HSV – herpes simplex virus; VZV – varicella-zoster virus; EBV – Epstein-Barr virus; RSV – respiratory syncytial virus; hMPV – human metapneumovirus; SARS-CoV-2 – severe acute respiratory syndrome coronavirus 2; PCR – polymerase chain reaction. | |