Based on the history provided, there is no risk of
HIV transmission in this scenario. HIV is not transmitted by mosquitoes, as the virus does not survive or replicate inside mosquitoes, and they do not inject blood from a previous person when they bite. The blood noted on the blanket or undergarments is most likely menstrual blood or blood from the crushed mosquitoes and does not pose a risk for HIV transmission.
Health Tips
No
HIV testing or post-exposure prophylaxis (PEP) is indicated for this exposure. If there was no other potential exposure (such as unprotected sexual contact or needle-stick injury), you can be reassured that this incident does not carry a risk of HIV infection.