Wildlife populations seem to be a problem even though they definitely are part of the ecosystem that makes Nature and the world exquisitely enjoyable. However, land management officials and folks at the U.S. EPA apparently think differently. Wild horses, in particular, have become problematic in the prairie states. Several entities began working on a contraceptive vaccine to control wild horse populations. After years of research a horse contraceptive vaccine is being lauded at various levels.
According to Wayne Pacelle, president and CEO of The Humane Society of the United States (HSUS), “This welcome announcement marks a watershed in the humane management of wild animals. This is a win-win-win – good for horses, good for wildlands management and good for taxpayers. Expanding the use of this proven contraceptive should lead to a significant reduction in wild horse gathering, relocation and costly pasturing in long term holding facilities.” 
So what is this contraceptive vaccine? Believe it or not, the horse contraceptive vaccine originally was researched as a human contraceptive, which was restructured for animal use. The vaccine is Zonastat-H contraceptive vaccine, scientifically known as Porcine Zona Pellucida (PZP). Produced by the Science and Conservation Center of Billings, Montana, Zonastat-H causes the production of antibodies that bind to sperm receptor site on eggs and block fertilization.  The vaccine’s producers are introducing PZP to zoos, parks, and communities to test the management of wildlife populations. Even though that may sound all well and good, what happens if suddenly wildlife stops breeding completely?
This question then begs to be asked, “Will PZP become available for pet cats and dogs instead of the current spaying and neutering?” Will PZP become another ‘annual’ vaccination that pet owners will be forced to get for their animals since the HSUS apparently is gungho to have animals vaccinated with it? 
In South Africa HSUS is conducting immunocontraception field tests on elephants. Can’t you picture it now: Future wildlife documentaries will have one scrawny wildebeast instead of herds dashing across the savannah with no lions in pursuit. Or perhaps, only enough reindeer to get Santa’s sleigh off the ground every Christmas Eve. Do you think mountain goats are a problem? How about birds? Will they want to immunize fish in the sea? What will the fishing industry have to say about that? However, if they really want to be helpful with PZP, consider immunizing inner city rats and other vermin—now that would be a rewarding venture. Next they could try mosquitoes, flies, and picnic ants. What do you think?
Since these immunocontraceptive vaccines are administered by needles or darts, will nanoparticle-size-darts have to be invented, which will be released into the atmosphere and inadvertently innoculate humans too? No matter how off-the-wall that may sound, there are GMO/biotech mosquitoes designed to curb dengue fever. However, there seems to be this caveat:
Cognizant that genetic engineering is a technology that carries the potential for risks as well as benefits, the WHO is finalising [sic] guidance on how GM insects should be deployed in developing countries, which it expects to release by the end of the year .
Now to address the question in the title Is Human Immunocontracption Next? Since the horse immonucontraception vaccine was first invented as a human vaccine that was revised, one has to wonder if any of its ingredients make their way into the numerous and varied vaccines that everyone in the USA and around the world are mandated into receiving.
Since the United Nations and the World Health Organization are concerned about the growing population, plus nations like China have regulations about how many children a married couple can have—only one, along with the infamous Georgia Guidestones  and their frightening ‘First Commandment’ stating
Maintain humanity under 500,000,000 in perpetual balance with nature[Currently there are over 7 billion on the planet and they want only one-half a billion. How are they going to accomplish that? Probably vaccines and vaccinations just like with the horses and wild animals. What’s in your vaccine?]
Along with the ‘Second Commandment’ that reassures
Guide reproduction wisely – improving fitness and diversity[Nothing is wiser in improving fitness, they think, than the programs financed by the Gates Foundation for vaccinating the poor in countries of the world where populations are exploding, along with the ominous Agenda 21 that most folks probably aren’t aware of its goals for a one-world government under the auspices of the United Nations. It seems the USA already has signed off on handing over its military to the one-world government.]
Nothing in my opinion posits what’s happening to us more than these statements from “Face Like the Sun” website:
In other words, neo-technocracy is the presence of science based ethics and morality that would help steer the direction of governments. In many ways, we already live in a neo-technocratic society. 
References: http://www.humanesociety.org/news/press_releases/2012/02/EPA_Announces_First_Fertility_Control_Vaccine_for_Wild_Horses.html  http://www.kulr8.com/news/local/Locally-Produced-Horse-Vaccine-Approved-139657303.html?video=pop&t=a  http://www.bbc.co.uk/news/science-environment-15491228  http://www.thegeorgiaguidestones.com/Message.htm  http://spectator.org/archives/2011/03/22/one-world-government-obama  http://www.facelikethesun.com/2011/12/04/neo-technocracy-and-transhumanism-part-1/
Photo Credit: Rodney Ramsey