Plague Infected Mice Missing from UMDNJ Lab
This weekend it was reported that 2 mice infected with Yersinia pestis, the causitive agent of plague, were missing from a lab at the University of Medicine and Dentistry of New Jersey (UMDNJ). In September 2005 it was also reported that 3 live mice infected with Y. pestis were missing from UMDNJ a lab. In this case however, the “missing mice” are actually the carcasses of mice who died during an experiment, were bagged and placed in a freezer for storage until the experiment was completed and they could be incinerated. It is believed that the missing bag of mice was accidentally sterilized along with another bag.
In both cases the FBI investigated and determined that there was no public health risk.
The SIPRI chapter describes the nuclear weapon modernization programs underway in each nuclear-armed state and provides estimates for how many nuclear warheads each country possesses.
FAS researchers Hans Kristensen and Matt Korda with the Nuclear Information Project write in the new SIPRI Yearbook 2024, released today.
The total number of U.S. nuclear warheads are now estimated to include 1,770 deployed warheads, 1,938 reserved for operational forces. An additional 1,336 retired warheads are awaiting dismantlement, for a total inventory of 5,044 warheads.
A military depot in central Belarus has recently been upgraded with additional security perimeters and an access point that indicate it could be intended for housing Russian nuclear warheads for Belarus’ Russia-supplied Iskander missile launchers.