A person has been possibly infected during/in a microbiology laboratory(“Labocomial” infection). This is the report about it. The person thinks it is “labocomial” because of the following reasons.

• The person was healthy for a long time. But suddenly he felt sick. That is coincidented with the practice.
• He felt that his sickness is different from his usual symptoms of cold, so he wonders the causative agents are from a different origin. i.e. Not an environmental origin.
• His symptoms matches the microbes we used in the lab. i.e. S. Aureus exotoxin. These symptoms are general and can be caused by other agents as well, but some symptoms rarely happened to him before. Thus he suspects a different origin again.

Note: Currently he does not know it is really a case of “Labocomial” infection, because S. Aureus is an environmental bacteria too. Only these observations indicate it is a possible/likely cause.

1. Report the case and make it clear if it was really a “labocomial” case and take an action if necessary. Especially S. Aureus can cause endocariditis, which is irreversible once the myocardial cells are damaged.
2. Collect other cases: I wonder similar kind of infections have happened among other students or not , recently or in the past.
3. By taking necessary actions we don't need to reduce the variety of bacteria we can handle during our practices. It is not good if S. Aureus petri-dish is removed from our labs. Rather we continue to use it safely with necessary safety measures.

A healthy student became sick after microbiology laboratory, during which he performed catalase reaction with Staphylococcus Aureus. He is the first student to perform the experiment; he opened the petri-dish first time and possibly inhale the densest air with the bacteria.

The Person has been very healthy. He has not even caught a cold for more than year. He cares about his health, eg. He goes to sportsclub/gym regularly because he has known from his experience that it improved his immune system; Before he started to go to gym, he had had a cold 2/3 times a year, and regularly go to a gym then the colds disappears from him and stop going gym again he had colds sometimes. This experience made him believe in the connection between exercise and improved immune system. Anyway he was healthy individual with high health consciousness.

1. The Lab was at 8:00 on Thursday. (Oct 29)
2. On Friday(Oct 30) he started to feel a bit sick. He felt sick on Saturday. (Oct 31)
3. He felt really sick on Sunday(Nov 1). These symptoms match to the symptoms of Exotoxin by S. Aureus(Toxic Shock syndrome).
   Symptoms:
   1. High Fever.
   He did not measure the degree. But He felt very cold even after he wore 5 layers of clothes. Also he had a terrible shivering. That indicates a high fever. This coldness and shivering are extraordinarily bad (compared to usual cold).
   2. Nausea. He almost vomited. Note: He does not usually vomit even if he has a cold.
   3. Watery Diarrhea. He still has this symptom. He does not usually have diarrhea, either.
4. His immune system now overtook the bacteria and He is feeling better. But still he has diarrhea. (It may indicate his immune system overcome the bacteria, but some exotoxin has still remained.)

• Also I wonder there are any measures taken in other medical school generally.
• During the class, he had a question to the teacher; These infection happens only to immuno-suppresssed individuals. She answered, “No. It happens to normal people.” Then he asked, “so people like us, students, can be affected.” and he wondered it is ok to deal with these bacteria without any protections. That had been somehow in his mind. And he started to suspect that his infection might be connected with this lab.