Dear {Recipient},

My apologies for spreading the {flu/mumps/etc.} at our {workplace/school/etc.}. I thought I had already fully recovered—I was feeling good and really eager to get back to {work/class/etc.} after spending {number of} {days/weeks} {at home/in bed}. I should have waited a couple more days before returning.

I'm so sorry you got sick because of me. I hope you get well soon!

Sincerely,
{Your Name}

To [Name],

I am writing to apologize for my role in the transmission of a disease. I understand that this has caused you and your family tremendous pain and suffering, and I am truly sorry for my part in it.

I take full responsibility for my actions and accept that I should have taken more care to ensure that I did not spread the disease. I should have been more aware of the risks associated with the virus and taken steps to protect myself and others.

I know that I cannot undo the damage that has been done, but I want to make sure that you know how sorry I am for my part in this. I understand that this has been a difficult and stressful time for you and your family, and I am deeply sorry for my role in it.

I have learned a great deal from this experience and I am committed to doing everything I can to prevent the spread of disease in the future. I will be more diligent in my efforts to protect myself and those around me, and I will make sure that I am aware of the risks associated with any situation.

Again, I am truly sorry for my role in the transmission of the disease. I understand that this has caused you and your family a great deal of pain and suffering, and I want to make sure that you know how sorry I am.

Sincerely,

[Your Name]

Dear [Recipient],

We at [Company Name] would like to extend our sincerest apologies for any harm caused by the infectious spread that we were responsible for. We understand that this has caused a great deal of disruption and distress to many people, and we are deeply sorry for our role in this.

We take full responsibility for our part in this incident and we are committed to doing all we can to make sure that it never happens again. We are currently conducting a thorough review of our processes and procedures to ensure that no similar incident can occur in the future.

We understand that the incident has caused a great deal of financial loss and disruption to our customers, and we are doing all we can to make sure that those affected are compensated for their losses. We are in the process of setting up a compensation scheme for those affected, and we will be in contact with them soon to discuss the details.

We understand that this incident has caused a great deal of distress and disruption to the community, and we are doing all we can to make sure that it does not happen again. We are committed to working with the relevant authorities to ensure that all necessary steps are taken to prevent a similar incident from occurring in the future.

We understand that words alone cannot make up for the disruption and distress that this incident has caused, but we hope that our actions will demonstrate our commitment to making sure that this never happens again.

Once again, we would like to express our sincerest apologies for any harm caused by the infectious spread that we were responsible for.

Sincerely,

[Your Name]
[Your Position]
[Company Name]

Dear [Name],

I am writing to express my sincerest apologies for my unintentional contamination [to you] [of your/product/property]. I understand the seriousness of this issue and the potential consequences of my actions.

I understand that I have caused you a great deal of inconvenience, and I deeply regret my careless mistake. I want to assure you that this was an isolated incident and that I will take all necessary steps to ensure that it does not happen again.

I understand that this contamination has caused a great deal of damage and I am willing to take full responsibility for my actions. I am willing to pay for any damages and will do whatever it takes to make sure that this does not happen again.

I understand that this is a serious matter and I want to make sure that I am doing everything I can to rectify the situation. I am willing to take any steps necessary to make sure that this does not happen again.

Once again, I apologize for my careless mistake and I hope that you can accept my apology. I will do whatever it takes to make sure that this does not happen again.

Sincerely,

[Your Name]