def generate_unpassaged():
    """ 
    Create annotations for unpassaged sequences
    """
    unpassaged = ['ORIGINAL_SPECIMEN_UNCULTURED_IN_VTM', 'OR', 'ORIGINAL',
        'P0', 'ISOLATED_DIRECTLY_FROM_HOST_NO', 'CLINICAL_SPECIMEN', 'NO',
        'LUNG_1', 'LUNG', 'ORIGNAL', 'ORGINAL', 'THROAT', 'PRIMARY', 'NASO',
        'AUTOPSY', 'BRONCHIAL', 'NASAL', 'NOSE', 'ORIG', 'SWAB']
    unpass_dict = {}
    annot = ['UNPASSAGED', 'UNPASSAGED', '0']
    for desc in unpassaged:
        unpass_dict[desc] = annot
    return unpass_dict
