That time can be difficult to determine, and there are many conflicting opinions regarding the most appropriate time to vaccinate.(這一時間很難確定，在何時是正確的免疫時間這一問題上許多觀點是沖突的。)

Nonetheless, it will still be possible to vaccinate people in other high-risk groups: health care workers, people caring for infants and healthy young people.(雖然如此，它還是有可能給其它高危險人群組接種：醫護人員、嬰兒看護及健康的年輕人。)

They refused to vaccinate their own children.(他們拒絕給他們自己的小孩接種。)

Doctors vaccinate us so that we do not catch smallpox.(醫生給我們打預防針使我們不會得天花。)

Boser has to vaccinate her foxes against various diseases.(博瑟必須給她的狐貍接種預防各種疾病的疫苗。)

Despite efforts to vaccinate and control the population of infected birds, H5N1 is considered firmly entrenched in bird populations across large parts of Asia.(盡管人們努力接種疫苗和控制已感染的禽鳥數量，但H5N1病毒仍頑強地存于亞洲大部分地區禽鳥群內。)

At home it began a program to vaccinate children against infectious childhood diseases.(在國內開展了接種計劃，予防兒童傳染病等。)

Doctors have been given a target to vaccinate just over half of people in the priority groups in order not to lose income, but fear they will not be able to hit this.(醫生為了保住自己的收入，必須針對優先人群，讓半數以上的人能夠接種疫苗，但他們擔心自己沒法辦到。)

If sow herd is vaccinated, especially pre-farrowing, then it is even more important to vaccinate pigs later.(如果母豬免疫，尤其在產前免疫，仔豬則免疫更嘉推遲。)

They give his body time to form its own antibodies, or protective substances, against some diseases. The doctor may vaccinate him for protection against others.(它們為他的身體提供了時間去形成對抗某些疾病的抗體或有保護性的物質。醫生可以給嬰兒接種疫苗保護他不受其它疾病侵襲。)