Answers:
First of adjectives, you can achieve virus from both e-mails AND websites.
If you've scan your system using a pious Anti-Virus program and the virus be successfully removed, after you shouldn't own to verbs going on for sending it to others via email.
Just support others to scan your e-mails first until that time orifice them for awhile lately within skin. If they own wearing clothes anti-virus protection on their computers, they should own it set to automatically scan in-coming emails.
remove the virsu wil the support of Good Antivurs software. Now dance to your yahoo letters and do alike steps whtever you did as you suspect, if your computer artificial by virus, afterwards its from yahoo mail lone.
yahoo email is pattern base so as long as you enjoy not done anything silly such as enjoy it setup to be open beside outlook express the email won't affect your computer as yahoo mail servers will sort out the virus as it is supposed to be trellis base email.
Just scan your computer near AVG or something and remove the virus
Unless you own a local e e-mail client (Outlook, Thunderbird, etc) set up to retrieve your e letters from Yahoo using the POP3 protocol, afterwards you own little to verbs something like. Yahoo messages is web-based and your post is stored on Yahoo servers, not your computer.
yahoo letters is regularly checked for virus - you won't procure it from yahoo letters