The phrase "an unprotected intercourse" is not correct in English.
It should be "unprotected intercourse" without the article "an." You can use it when discussing sexual activity that occurs without the use of protection, typically in health or relationship contexts.
Example: "It's important to understand the risks associated with unprotected intercourse, including sexually transmitted infections."
Alternatives: "unprotected sex" or "sex without protection."
Of these, 70 (50%) reported having any unprotected intercourse with an HIV negative or unknown status casual partner: 29% reported unprotected insertive anal intercourse with at least one of these partners (male or female), 34% reported unprotected receptive anal intercourse, and 34% reported unprotected insertive vaginal intercourse.
Two couples had not reported any unprotected intercourse and transmission was associated with a condom failing during intercourse; neither of these partners received antiretroviral prophylaxis after exposure.
Of all unprotected intercourse acts in the past 3 months, 88.6% occurred in seroconcordant partnerships (Figure 2b).
Not only is the IUD more than 99 percent effective in preventing pregnancy, but insertion of an IUD soon after a woman has unprotected intercourse is often effective as emergency contraception.
A gamete function deficiency that has only modest effects in the mouse could produce a more significant effect on human fertility, particularly since the clinical definition of infertility is an inability to conceive after a year of unprotected intercourse.
During the same period, the number of teenage abortions increased 17 and it can be speculated that the problem with bleeding control associated with progestin-only methods have led to lower continuation rates in this group of users and, as a consequence, an increased risk of unprotected intercourse leading to unwanted pregnancies.
Frequent HIV testers may regard this as a method of primary prevention; while acknowledging their high-risk sexual activities, they may use a recent negative HIV test as evidence of their "safety" as a partner for unprotected intercourse [32].
Inserted following unprotected intercourse, an IUD can prevent 95percentt of pregnancies and once inserted, IUDs provide protection for up to 10 years.
