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Segment Performance Measures and Expenses (Tables)
6 Months Ended
Jun. 30, 2025
Segment Reporting [Abstract]  
Schedule of Significant Expense Categories and Consolidated Net Loss

The table below provides a summary of the significant expense categories and consolidated net loss details provided to the CODM (in thousands):

 

   2025   2024         
   For the six months ended June 30, 
   (In thousands)  

Change Increase

(Decrease)

 
   2025   2024         
Operating Expenses:                    
Clinical Research                    
OVATION  $382   $721   $(339)   (47.0)%
Placcine Vaccine   33    889    (856)   (96.3)%
Other Clinical and Regulatory   951    1,100    (149)   (13.5)%
Subtotal   1,366    2,710    (1,344)   (49.6)%
Non-Clinical R&D and CMC                    
OVATION   1,485    652    833    127.8%
PlaCCine Vaccine   -    1,956    (1,956)   -%
Manufacturing (CMC)   541    796    (255)   (32.0)%
Subtotal   2,026    3,404    (1,378)   (40.5)%
Research and development expenses   3,392    6,114    (2,722)   (44.5)%
General and administrative expenses   3,521    3,911    (390)   (10.0)%
Total operating expenses   6,913    10,025    (3,112)   (31.0)%
Loss from operations  $(6,913)  $(10,025)  $(3,112)   (31.0)%