1. health official have discovered that bacterial infection that were once easily handled by antibiotics now pose a serious threat to our health. 2. they feel t

1. health official have discovered that bacterial infection that were once easily handled by antibiotics now pose a serious threat to our health.
2. they feel that there is an epidemic of infectious condition that are difficult or impossible to threat, such as AIDS.

dari kalimat tersebut, adakah kalimat yang salah? jika salah, maka pembetulannya seperti apa?