Concerns About Infection After Picking Up Trash: What You Should Know

Please consult a doctor for your questions?

Hello doctor, I am a freshman this year.
During class today, I noticed that last week there was some trash or a bag left under the seat next to me.
Today, I sat next to a different person, but the trash ended up being kicked in front of my seat.
I thought to myself that it had been a week and so many people have used this classroom without anyone throwing it away.
After class, I picked it up and threw it in the trash can, but I just discovered that my left thumb has a small abrasion, although it’s not bleeding.
I suddenly became worried about whether picking up that trash could expose me to bacteria or viruses, such as sexually transmitted infections or other strange viruses.
I just felt that since no one was taking care of the classroom environment, I would help out, but now I’m concerned about whether it could have any consequences.
I quickly went to the restroom to wash my hands and used hand sanitizer, but I’m not sure if I’m overthinking this.
I’m worried about whether the small injury next to my nail could get infected.
I hope you can help me analyze this and let me know if I need to get a blood test.
When I told my boyfriend, he said I’m just being overly imaginative.
But I wonder why I picked up trash in the first place; I just thought it might make it easier for the cleaning staff.
Thank you, doctor, for taking the time to read my question.

Lin, 20~29 year old female. Ask Date: 2020/10/14

Dr. Hong Yuanbin reply Internal Medicine

Hello, based on your description, you noticed a small abrasion on your hand after picking up trash and are concerned about potential injury during the process.
Theoretically, unless the trash contained sharp objects that were contaminated with blood, the risk of infection is minimal.
According to your description, it seems that this is not the case.
However, even if you were to be punctured by a sharp object with blood, the chances of contracting bloodborne infections, such as HIV, remain very low.
I recommend not to worry excessively unless you experience fever or any other discomfort, in which case you should seek medical attention.
Thank you for your inquiry.

Reply Date: 2020/10/14

More Info

It's completely understandable to feel concerned after coming into contact with trash, especially when you have a small cut on your thumb. Let's break down your concerns and provide some reassurance based on medical knowledge.

First, it's important to recognize that while trash can harbor bacteria and viruses, the risk of infection from a small cut, especially one that is not actively bleeding, is generally low. Most common pathogens that could be found in trash, such as bacteria, are typically not harmful unless they enter the body through a significant wound or if the person has a compromised immune system.
1. Infection Risk from Trash: The types of bacteria commonly found in trash include E. coli, Salmonella, and Staphylococcus. However, these bacteria usually require a more significant entry point than a small superficial cut to cause an infection. Your body's skin acts as a barrier, and unless the cut is deep or contaminated with a significant amount of bacteria, the risk of developing an infection is minimal.
2. Cleaning the Wound: You mentioned that you washed your hands and used alcohol after handling the trash. This is an excellent first step in preventing infection. Cleaning the area around the cut with soap and water is crucial. If you haven't done so already, consider applying an antiseptic ointment and covering the cut with a bandage to protect it from further irritation and contamination.

3. Signs of Infection: Keep an eye on the cut for any signs of infection, which may include increased redness, swelling, warmth, or pus. If you notice any of these symptoms, it would be wise to consult a healthcare professional.
4. Blood Tests: As for your concern about needing blood tests, it's generally not necessary unless you develop symptoms of an infection or if the cut worsens. If you remain vigilant about keeping the area clean and monitor for any changes, you should be fine.

5. Mental Health Aspect: It's also worth noting that anxiety about potential infections can sometimes lead to overthinking and unnecessary worry. It's good to be cautious, but try to balance that with rational thinking about the actual risks involved. Engaging in activities like picking up trash is commendable and contributes positively to your environment, so don't let fear deter you from such actions in the future.

6. General Precautions: In the future, if you find yourself in a similar situation, consider wearing gloves when handling trash. This can provide an extra layer of protection for your skin. Additionally, always ensure that any cuts or abrasions are covered when engaging in activities that might expose them to dirt or bacteria.

In summary, while it's natural to feel concerned after handling trash with a small cut, the actual risk of infection is low if you take proper care of the wound. Continue to monitor it, keep it clean, and seek medical advice if you notice any signs of infection. Your proactive approach to maintaining a clean environment is commendable, and with the right precautions, you can continue to do so safely.

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