Leptospirosis is considered infectious but is not transmitted from person to person. Generally, a disease like this is caused by an infectious agent and not spread between people.Leptospirosis, although infectious, is not a genetic disease. It is not caused by a defective or abnormal gene.enerally, a disease like this is caused by an infectious agent and not spread between people. Leptospirosis, although infectious, is not a genetic disease. It is not caused by a defective or abnormal gene.
Blood transfusions, pregnancy, previous transplant(s) or a current infection can cause your immune system to be more aggressive. Crossmatch Testing â When a kidney is available, your blood and the blood of the donor kidney are tested. With a negative crossmatch, (no reaction) you are compatible with the donor. A positive crossmatch (reaction) the kidney will not work for you because it is incompatible.
1 Kidneys can be received by a patient even if the HLAs arenât a complete match as long as the blood type is compatible.  Cross-matching antigens. The last test before implanting an organ is the cross-match. A small sample of blood from both the donor and recipient will be mixed in a tube to see if thereâs a reaction.